Problems Arising from Plastic Mold Parts Polishing

    In the process of manufacturing, plastic mold parts polishing is a very

important working procedure. It is related to the quality and service life

of plastic mold parts. However,  there are often a lot of problems to

appear. Today, I will talk about the problems arising from plastic mold

parts polishing.
    1. Excessive polishing
    In the daily polishing process, one of the biggest problems is

"excessive polishing". The longer the polishing time is, the worse the

quality of mold surface will be. There are two kinds of phenomena of

excessive polishing: "pitting" and "Orange peel". Excessive polishing often

take place in mechanical polishing.
    2.The causes of the formation of "pitting" on the workpiece surface
    Due to some non-metallic impurities in the steel, usually hard and

brittle oxide, they are pulled out from the steel surface in the polishing

process, and then form a crater or pitting. The major factors in the

production of the "pitting" have the following points:
    1)The polishing pressure is too much, and the polishing time is too

long.

    2)Steel purity is not enough, and Hard impurity content is high.
    3)The surface of plastic mold parts rust.
    4)Black leather material is not clear away.
    3. The measures to eliminate the “pitting”
    1) Carefully grind the surface again.
    2) When the size of sand grain is less than 1 mm, it should avoid using

the most soft polishing tools.
    3) Adopt the shortest polishing time and the smallest polishing strength

as far as possible.
    Above are the problems arising from plastic mold parts polishing, and

the measures solving these problems. Plastic mold parts manufacturers must

master the working principle and technological process of mold parts 

polishing. Choosing the reasonable polishing methods can improve the quality

and prolong the service life of mold parts.

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Understanding of high speed steel&tungsten steel

Today we are going to learn about high speed steel&tungsten steel, thus you

can make better use of the two kinds of materials.
About high speed steel
High speed steel (HSS) is a kind of tool steel with high hardness and high

wear resistance and high heat resistance, also known as wind steel or steel,

it means even quenching cooling in air can be hardened, and very sharp. It's

also called white steel. It mainly used in the manufacture of complex thin

edge and impact resistance metal cutting tools, but also the manufacture of

high temperature bearings and cold extrusion mould, such as turning tools,

drills, hob, machine saw and the high demand of the mould.

About tungsten steel
Tungsten steel (carbide) has a series of excellent properties of high

hardness, strength and toughness, heat resistance and corrosion resistance,

etc, especially the features of high hardness and heat resistance , even at

a temperature of 500°C it remained unchanged, at 1000°C it still have high

hardness. Widely used as the material, such as turning, milling, drilling,

boring knife and so on . The cutting speed of the new type cemented carbide

is several hundred times of that of carbon steel.
The relevant information as high speed steel&tungsten steel are shown, if

you want to know more information about China tungsten carbide mold parts,
please pay attention to YIZE MOULD..

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Center of precision mold parts customization processing

With the constant innovation of science and technology, people are demanding

higher and higher technical content, and mould maker began to study the

precise mobile phone connector, precision mold parts customization, for our

innovation of science and technology.

Precision mold parts customization is a kind of management method for

precision mold  parts processing factory, mainly for the convenience of mold

parts machining manufacturer, precision mold parts customization is based on

customer needs, customer samples, customer's drawings , to highlight

customer first, the principle of the supremacy of customers, YIZE MOULD make

customers are more satisfied and relieved with the processing of mold parts.

Precision of customized precision mold parts is: size tolerance±0.001mm,

coaxial degree within 0.002 ,true roundness 0.0015mm, surface roughness

Ra0.025, straightness tolerance 300mm within 0.002. And in accordance with

the national standard GB, Japanese standard JIS, German standard DIN,

American Standard AISI international industrial standard production.

Precision mold parts customization is a kind of consumer concept of

precision mould parts suppliers , and it is the supply and demand concept of

YIZE people.

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Polishing and etching properties of tungsten carbide mold parts

    With the development of all industries, the mold industry this year is

also developing marvelously. Today, let us look at the introduction on

polishing and etching properties of tungsten carbide mold parts.
    From the widespread use of plastic mold, low surface roughness value is

very necessary. Low surface roughness value can affect the service life of

mold parts and the production efficiency and the quality of the products.

High surface quality can reduce corrosion, especially local pitting

corrosion, and reduce the risk of cracking. The chemical composition,

structure, hardness and carbide of polished steel must be evenly

distributed. Large carbide is extremely harmful on the surface polishing,

especially when they segregate into a strip.  It is particularly important

that steel can't contain oxide inclusions or segregation without large

deformation, so the smelting and deoxidation technology must be strictly

controlled. The effect of vacuum arc remelting and electroslag remelting is

good. This process has now become the main production mode of plastic mold

steels.
    If there is any hole not closed in the steel, it will affect the

polishing properties of tungsten carbide mold parts. So it is very necessary

to prevent metallurgical defects and keep the density of the organization in

the hot working, which can be achieved by modern forming technology. Defects

caused by heat treatment or surface hardening should avoid causing

decarburization with uneven hardness.
    Above is the polishing and etching properties of tungsten carbide mold

parts. Dongguan Yize Mould is a professional tungsten carbide mold parts

wholesale manufacturers. If you want to know more about tungsten carbide 

mold parts products, you can continue to browse our webpages.

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The Necessary Tungsten Carbide Mold Parts Performances (2)

Few days ago,I have introduced the former three tungsten carbide mold parts performances for you. Today, I will continue to introduce the another three.
   4. Cold and hot resistance fatigue performance
In the process of work, some tungsten carbide mold parts are in the condition of repeated heating and cooling. The tension of cavity surface, the action of pressure and stress cause surface cracking and peeling, increase the friction, hinder plastic deformation, reduces the dimension precision, which results in the failure of mold. Cold and hot fatigue is one of the main form of hot-work die failure. This kind of mold should have high resistance to cold and hot fatigue performance.
5.Corrosion resistance
Some tungsten carbide mold parts at work will decompose strong erosion gas such as HCI, HF and so on after heating, because there are chemical elements of chlorine and fluorine in the plastic. Those gas will erode the  cavity surface of mold components, and increase the surface roughness and exacerbate the wear and failure rate.
6.High-temperature property
It is one of the most important property of tungsten carbide mold parts performances. When the working temperature of tungsten carbide mold parts is high, the hardness and strength will be reduced. This will lead to premature wear of mold or producing plastic deformation and failure. Therefore, the material of tungsten carbide mold parts should have high resistance to tempering stability, to ensure that the mold has high hardness and strength under the working temperature.
The above six points are the necessary tungsten carbide mold parts performances. If you'd like to know more about the properties of tungsten carbide mold parts, you can continue to browse our official website to learn it.

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Main problems in large mold processing

      With the rapid development of automobile industry, demand for large, high-ornamental automobile molds is growing rapidly , all kinds of large mould production had become the new field that many processing enterprises to seek an opportunity for the global competition. What are the main problems of large mold processing?
1. Huge size and weight
      How to deal with its own large size and weight is a challenge for processing enterprises in processing large mold.

2. Acquisition cost
      The most direct cost of processing all kinds of large mold is the cost of the machine tools. The machine tools that can produce large moulds can be quite expensive, especially in the  complex process arrangement , it is necessary to use multiple machine tools to complete the whole process from rough machining to finish machining.Such high input cost is also the biggest obstacle for many enterprises to enter this market.
      The main problems existing in the large mold processing by a certain amount of skills and techniques can also be solved, therefore, as long as we look for the manufacturer,  some problems can be avoided to a certain extent.Manufacturers should also continue to innovate and to absorb advanced technology so that produce the precision mold components products that satisfy our customers.

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Seven kinds of common thread milling tools

      With the popularity of numerically-controlled machine tools, thread 

milling technology applied in mechanical manufacturing industry more and

more.
      Currently, there are many different kinds of thread milling cutters

are being use, consist of seven systems such as ordinary machine clamp

thread milling cutter, ordinary integral thread milling tool , integral

thread milling cutter with the chamfering function , thread milling cutter ,

spiral drill deep thread cutting tools and thread milling cutter, they have

their own unique characteristics, application characteristics, tool

structure, processing technology and so on various aspects , you can choose

yourself according to these characteristics.

      Thread milling is through the three axes linkage numerical control

machine tool, use thread milling cutter for milling spiral interpolation and

form thread, every time when cutting tool in horizontal plane do a circular

motion, it will move a pitch in a straight line . Thread milling has many

advantages such as high machining efficiency, high thread quality, good use

of cutting tools and good processing safety.
      The above summarizes some characteristics and the functions of several

common thread milling tools. When milling thread, cooling is also vital, we

should recommend the use of machine tools and cutting tools with inner

cooling functions. Due to cutting tool is at a high speed, under the action

of centrifugal force, the external coolant fluid is not easy to come in.



      Internal cooling way not only can be a good tool for cooling, what is

more important, it also helps chip remove smoothly from the blind hole

thread machining in high pressure , especially when processing inside small

diameter of thread hole need high pressure cooling, to ensure smooth chip

remove smoothly.
      In addition, in selecting thread milling cutter, the requirement of

specific mold components processing should be taken into consideration, such

as the production batch number, screw hole, piece, materials, thread

accuracy, size, and many other factors, comprehensive selection of the

cutting tool.

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Analysis of common problem of stamping mold and it’s solutions

     Stamping mold is a special process equipment,it is used more and more

widely in national production.Therefore,in order to use it better,we should

have a good understanding of it.Well,let me show you something about the

common problem of stamping mold and the solution.
      1.Die strip.Mold material will cause waste rebound.The solution is to

increase the modulus of mold reasonably.
      2.Die wear is not consistent.The solution is to use the whole lead

mold.
      3.ie Spring fatigue failure.The solution is to maintenance or

replacement of die spring regularly.

       Above these are the common problem of stamping mold and it's

solutions. Development of stamping mold in China leads to the stamping

mold's total production amount ranked the forefront all over the world,and

China began turn to mold export country from import country

gradually.Experts think it's an inevitable trend that Chinese precision 

stamping mold parts instead of imported mold.

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The Development of Plastic Mold Parts Market

    In recent years, the manufacturing level of China plastic mold parts has been improved greatly. Single set of large plastic mold parts production by weight has reached more than 50 t. The accuracy of precision plastic mold parts has reached to 3 cm. Plastic mold parts with multi-cavity has been able to produce encapsulation molds of a mold with 7800 cavity. It is understood that the output of plastic products in China in 2012 is close to 60 million tons, and it is also in the process of growth. Thus it can be seen that domestic demand has a huge driving force for plastic mold parts industry in China. Thus it promotes the development of the plastic mold parts market.
    At present, the plastic mold parts account for about 30% in the mold industry, and up to 50 ~ 70% of the total in the import and export of the mold. The plastic mold parts market in China has developed rapidly in recent years. The application of plastic products is increasingly widespread. It provides a very broad market for the plastic mold parts. China's mold industry market is very big, and it also has a trend of 15% ~ 20% in growth every year. This is mainly thanks to the development of mold large user industry, such as China's automobile, home appliances, IT industry, packaging, building materials and daily necessities.
    As you see, plastic mold parts market is developed step by step. It seems that many industries rising the requirement of the mold. So the precision mold industry becomes gradually hot. If you need ordering precision mold parts, we are the best choice. Yize is a high quality precision mold parts manufacturers.

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The Safety Requirements of Main Parts of Mold Parts

    Many friends have many not understand knowledge about the main parts of mold parts and inserts, function and safety requirements. Today, I will analyze it for you. Let everybody know more about the safety requirements of main parts of mold parts.
    1.Punch-die is the work parts directly making blank forming. Therefore, It is the key part of mold. Punch-die is not only precise but also complex. It should meet the following requirements: A. It should have sufficient strength, and can't fracture or break in the stamping process. B. It should have proper requirements to its material and heat treatment, to prevent the high hardness and brittleness.
    2.Positioning parts are the parts to determine the installation position, including positioning pin (plate), block pin (plate), guide pin, guide plate, distance side knife, lateral pressure and etc. When design positioning parts, you should consider the convenient operation. And it should not be excessive positioned. Its position should be convenient for observation. It had better use push-forward orientation and the orientation of outer profile and guide pin orientation, etc.
    3.Guide pins and guide sleeves of guide parts are the most widely used guide parts. Its role is to ensure that the punch-die have a precision fit clearance when punching. Therefore, the gap of guide pins and guide sleeves should be smaller  than the cutting clearance.
    The above is the the safety requirements of main parts of mold parts. If you want to know more about mold parts related parts, you can continue to learn it.

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Matters need attention about repairment of automatic machine

      The wide application of automatic machine has greatly improved the production efficiency, but once the machine fails, it often affects the production schedule seriously. When it is repaired, the inattention can also cause great loss to the enterprise.Let's talk about the matters need attention about repairment of automatic machine.
      1.The components should not be replaced by feeling.
      2.The electric iron should be easily placed in the front, away from the repair circuit board.

      3.Automatic machine shall not cut off the printed circuit at will.
      The above is the three matters needing attention aboutrepairment of automatic machine.The automatic machine is a kind of cutter automatic lathe with high performance, high precision and low noise.Suitable for copper, aluminum, iron, plastic and other precision parts processing and manufacturing.Want to know China precision automatic machine components,pay attention to YIZE,please.

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The reason of tungsten carbide mold parts abrasion

Many friends who are in the mold industry have some knowledge about tungsten carbide mold parts. But in the process of tungsten carbide mold parts production and processing, they will all in wear and tear. What caused the tungsten carbide mold parts abrasion? I believe that many friends are not very understand it. Next, I will analyze the reason of tungsten carbide mold parts abrasion for you.
A.Oxidative wear
After the operation temperature of tungsten carbide mold parts is over 700 ℃, the oxygen in the air will react with chemicals in the tungsten steel. Then, it will form the loose and vulnerable oxide on the surface. When the oxide are wiped off by mechanical action, tungsten carbide mold parts will
be corroded and abraded and left pits on the surface.
B. Mechanical abrasion and wear
The workpiece material, Such as the metal carbides, rub and scratch on the
surface of tungsten carbide mold parts. Due to the mechanical action, it
gradually erase the surface material and then cause the wear and tear. Mechanical abrasion and wear exists under any cutting speed.
C. Diffusive wear
The higher the cutting temperature, the faster the diffusion, and the more quickly the tungsten carbide mold parts abrasion. It is closely related to the properties of tungsten carbide mold parts.
D. Bond wear
 Under the condition of high cutting temperature, some outstanding points of tungsten carbide mold parts will bond with the workpiece, and gradually be cut, teared and taken away by the workpiece. This is bond wear.

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The Knowledge of Mold Parts Related Parts

    Mold parts is indeed very wide. Mold parts are different in various models and various materials. Today we are together to analyze the mold parts related parts. Let us go deeper into learning other more parts of mold parts.
    Core pins are also called punch, upper die, male die and blunt needle, etc. And the punch is divided into type A punch, type T punch and alien punch. Blunt needle is the metal parts installed on the stamping die, directly contacting with material. It makes the material deformation and cut material.
    Mold parts related parts also include mold punch. Mold punch generally adopts high speed steel and tungsten steel as the material. And the high speed steel is the most commonly used material. The commonly used include CR12, CR12MOV, asp23, skd11, skd51, skd61, etc.

    The purpose of ejector pin:
    1.In the plastic mold parts, it will break down the product from the mold, which is the most commonly used.
    2.Hard alloy thimble, such as tungsten steel thimble, can be used to pass a long and thin hole.
    3.Ejector pin is assembled on the lathe or grinding machine. It is used to support the workpiece and make the workpiece turn around it's head conical metal rods. But it is completely different with the thimble of plastic mold parts.
    4.Plastic mold thimble can also be used in the mold. It have stable effect.
    Above is the knowledge of mold parts related parts. If you want to know more knowledge of hardware mold parts, you can come our website to learn it. Yize Mould is a professional connector mold parts manufacturer.

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Do you konw what is the specific connector mold parts?

The connector mold parts is a kind of precision mold parts that many companies would use, then what is the specific connector mold parts?
To understand what is the specific connector mold parts, first look at the basic definition: the connector refers to linkage unit in general between all kinds of electronic components, mainly as a single chip to connect and transmit electronic signalson that the circuit board, between circuit boards and circuit board to the box body.

The connector mold parts is mainly used in automotive, medical, agricultural and other fields.Dongguan Yize mould Co., Ltd. is a connector mold manufacturer,and has ten years of production experience, advanced equipment, rich experience in production and processing team, dedicated to the design, production and processing of all in one service, to make the connector mold parts more precise, is one of the best connector mold parts suppliers.

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How to choose EDM machine in mold processing?

      How to choose EDM machine in mold processing? Electrical discharge machining (EDM) is an important technique in die manufacturing, especially in the manufacture of plastic molds.
      With the progress of EDM technology and the increasingly strict environmental protection requirements, the performance requirements of EDM are becoming higher and higher. Then, how to choose EDM machine?
      1.Low oil, low viscosity, quick cooling, good flowability, good flushing and slag discharging effect

      2.Good dielectric and cooling characteristics are required to control the discharge
      3.About the service life,pick a machine with a longer life than the traditional mineral spark oil
      4.High flash point and low volatility, safe to use, can eliminate hidden dangers
      A good EDM machine can greatly improve production efficiency, lay the foundation for product quality, and then promote the development of the mold parts processing industry.

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Precision Core Pins And Sleeves Machning In Market Development

   Market demand is pulling a big factor in the development of precision 

core pins and sleeves  machining, though weakened the pulling effect of

various types of precision core pins and sleeves  demand downstream industry

on China mold industry, but with the development of China mold industry,

promote the improvement of core pins and sleeves machning,China precision

core pins and sleeves machning demand is gradually increasing, so precision

core pins and sleeves market will become better and better. Automobile

industry, electronics, electrical appliances, aerospace, new energy, IT,

medical machinery, such as high-speed railway provides new opportunities in

the market although the mold industry, but with the industry developing

speed down, to mold the demand continues to slow down, resulting in slowing

down the pace of development of our mould industry. But can not say the mold

industry development is slow, will not continue to innovate yize mold

development direction, so always make connector mold parts, resolutely to

increase the precision of core pins and sleeves to contribute to the

development of the market.

   Dongguan Yize Mould CO.,Ltd has a good knowledge of precision core pins

and sleeves machning.Core pins and sleeves is the most important products in

yize mould.If you want to choose make precision core pins and sleeves,

please choose yize mould as your core pins and sleeves supplier.


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Control in the process of precision mold parts processing

    With the development of mold parts processing industry, precision mold parts processing have also been favored. Today, let us discuss how control in the process of precision mold parts processing, which will help us do a better job in precision processing. Through the control of the machining process, to achieve the best effect and efficiency is our focus.
    1.Mold parts heat treatment
    To obtain the required heat treatment hardness of mold parts, it is necessary to control the heat-treatment internal stress, which makes the size tolerance and form and location tolerance remain stable after processing. In view of the different material parts, they have different ways of heat treatment.
    2.Mold parts electric machining
    The modern mold enterprise almost has no shortage of electric machining. Because electric machining can effectively process various of special shape, cavity and high hardness parts, it has become an indispensable processing means of mold manufacturing and metal processing industries.

    3.Mold parts surface treatment
    The content of the molding surface treatment include steel surfaces without porosity, uniform hardness, small anisotropy characteristic difference and low inclusion. So at the end of the processing,it is necessary to do the surface strengthening for precision mold parts. We should get rid of the hidden trouble of processing through mechanical polishing, bench grinding and polishing.
    4.Mold parts grinding
    There are three main types used for grinding processing: surface grinder, internal and external circular grinding machine and tool grinding machine tools.
    In conclusion, mold parts manufacturer focusing on controlling in the process of precision mold parts processing is the long-term effective way of survival and development.


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Applications of profile grinding in mold manufacturing

     When machining the parts with complex cross section, the method of profile grinding is necessary. In recent years, the level of China's mold manufacturing has obviously improved, and precision is a trend in the development of mold manufacturing.   Then, what are the specific applications of profile grinding in mold manufacturing?

     The principle of profile grinding is to divided the contour of the complex parts into several segments and arcs, and then piecewise grinding according to the process order,so that the connection is smooth,which meets the requirement of the product design.
      The above is applications of profile grinding in mold manufacturing.The profile grinding is a essential methods of  fine machiningin precision mold manufacturing,as it can improve the precision of mold manufacturing and shorten the processing time.At present, PG optical grinding is widely used in professional mold manufacturing factory.


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The five obvious features of injection mold manufacturing

      The injection mold is a tool for the manufacture of plastic products and a tool gives the complete construction and precise dimensions to plastic products.Here are five obvious features of injection mold manufacturing.
1.The cavity and core are in solid shape.
2.High precision and high surface quality are required, and long service life is required.
3.The process is long and the manufacturing time is tight.

4. Remote design and manufacture in different places.
5.Specification of work and dynamic combination.
      The above are five obvious features of the injection mould manufacturing.If you have any questions, you can consult YIZE.Dongguan Yize Mould Co.,Ltd. is a professional connector mould components factory from China.Yize was founded by Sam Wang in 2006,located in Dongguan City,China.Serving many mold companies at home and abroad,known for good quality,competitive price,reliabilty and on time delivery.Our dedicated and experience staffs are ready to serve you.Contact us today!

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How To Find High-end Core Pins And Sleeves Factory

    How to find high-end core pins and sleeves factory,core pins and sleeves is mainly made in yize mould.Yize mould is specializing in producing core pins and sleeves.If you want to find high-end core pins and sleeves,please choose yize mould.
   We have a strict examazation with core pins and sleeves.The material of it is imported material ,such as SKD11, SKH9, SKH51, SKH55, high-speed steel,special material can customize. Grinding precision 0.001mm.Surface roughness for EDM Ra0.04.EDM precision 0.002mm .Grinding angle clearness 0.002mm.Yize mould as precision core pins and sleeves machining is best in China.
  If you want to know more about our products,please visit our website.If you want to choose high-end core pins and sleeves factory,please do not heasitate to choose yize mould.

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