How to judge the quality of tungsten steel mold parts

 The quality of tungsten steel mold parts will directly affect the product quality, yield, cost, new product production cycle, old product replacement cycle, to adjust the product, enterprise market competitiveness. Now the economic situation of the quality requirements of the mold is getting higher and higher. How to make the mold work longer, to create more quality products has become the focus of attention of the enterprise in the condition of high precision, low cost, high efficiency.
    The quality of tungsten carbide mold components include the following aspects:
    Product quality: product size stability and fit, product appearance of light brightness, product information application rate, etc..
    Service life: In the premise of ensuring the quality of products, the number of times the mold can cycle work or the number of products produced.
    Mold maintenance: the operation is simple, the product easy to mold release, maintenance is convenient, the maintenance cost is low, the maintenance cycle is short and so on.

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The development of plastic mold industry in China

 Since 1980s, the development of plastic mold industry is very fast in the country a series of supportive policies, the average annual growth rate of 13%. In 1999, China's mold industry output value of 24 billion 500 million yuan, in 2000 was 27 billion yuan, the plastic mold which accounts for about 30%.. In the future of the mold market, the proportion of plastic mold will gradually increase in all molds.
    Plastic mold industry has developed for more than half a century in our country, the level of mold manufacturing has been greatly improved. In the development of large mold, we have been able to make the injection mold for the production of 48 Inch large screen color TV plastic shell and the plastic mold for the production of 6.5 kg large capacity washing machine and the plastic mold for the production of automotive bumper and the overall instrument panel. In the development of precision plastic mold, our country has been able to produce the camera plastic mold, precision plastic gear mold etc.. The precision of the injection mold cavity can reach 0.02~0.05mm, the surface roughness can reach Ra0.2 microns, and the quality and life of the mold are obviously improved.

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The future of automobile mould manufacturing industry

The mold industry is known as the mother of industry, the automobile mould is the key industrial equipment to produce automobile. The rapid development of China's auto industry and the strong support of the relevant policies of the country have brought a rare opportunity for the automobile mould manufacturing industry. At the same time, the market for automobile die manufacturing technology level, delivery capacity and other aspects also put forward new challenges. The traditional business process of automobile mold parts manufacturer has not adapted to the market environment with the customer, competition and change. Enterprises can only improve the comprehensive competitiveness by optimizing the restructuring, it will not be eliminated in the increasingly competitive market.

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The characteristics of mold industry

   The characteristics of mold industry include rapidity and diversity. New structure mold is more and more and the changing speed is more and more fast with the increasingly fierce market competition. In the mold industry, the product that can quickly produce the customer needs is a mold enterprise to become the key factor of the market leader. Therefore, seize the opportunity to become the key to the development of enterprises.
  The characteristics of mould management system are determined by the diversity and cyclic of the mould. It is an important function of the system that enterprises can quickly produce new molds for customers and can manage the mold of repeated production.
  Because of the diversity and variability of the mold. The enterprise must achieve the inventory management optimization, the information feedback high efficiency, the market response is nimble, so as to gain a firm foothold in the fierce competition of the mould industry. Therefore, the establishment of rapid response system has become the development trend of die and mold enterprises.

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The purpose of mold parts assembly

 We make the mold parts according to the technical requirements of the mold, and then assemble, locate, connect and fix a complete mold with the standard parts according to the technological requirements of the design. This process is called mold parts assembly. Mold assembly process, including subgroup assembling, final assembly and debugging, etc.. Debugging is extremely important in the whole process. In the assembly process, often repeated disassembly, adjustment, repair, until the test is qualified to complete the assembly.
  The quality and service life of the mold is not only related to the quality of the mold parts, but also related to the quality of the mold assembly. For example, a pair of punching die, the machining size of the convex die and the concave die meet the requirements. But if the assembly is not reasonable, the gap between the convex die and the concave die is not uniform, the quality of the processed workpiece is difficult to ensure, the life of the mold will be greatly reduced.

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Selection of automobile punching die material

   Because the function of various parts is different in the mold, so the requirement and the selection principle of the material are also different. Therefore, the selection of automobile punching die material is a very important work in the design of stamping die, it is not only related to the cost of the parts, but also seriously affect the production.
    Generally, the working part of the mold selection of materials is better than other parts. Different materials are usually used in accordance with the requirements of the mould. There are four main types:
    1, For the processing small size stamping parts and simple shape die working parts often use carbon tool steel, such as T8A, T10A, etc..
    2, For the processing large size stamping parts and complex shape die working parts often use alloy tool steel or high-speed tool steel, such as CrWMn, Cr12MoV, W18Cr4V, W6MoSCr4V2 etc..
    3, For stamping parts precision or die life requirements of relatively high mold work parts, commonly used hard alloy or steel bonded carbide YG15, YG20, GW50, etc..
    4, For large-scale mold work parts, commonly used ordinary cast iron or cast steel, and the cutting edge to be welded to strengthen, such as gray cast iron HT250, cast steel 2G270-500, etc..
    In the selection of auto stamping mold parts material, not only the working parts are very important, but also the guide pillar and guide sleeve parts are also very important, often used after carburizing and quenching of high quality low carbon steel or selection of bearing steel.

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The role of tungsten steel punch

  At room temperature, the mold is installed on the press to exert pressure on the material to produce a separation or plastic deformation, thereby obtaining the required parts. Stamping die is an indispensable process equipment for stamping production. It is a technology intensive product. The quality, production efficiency and production cost of stamping parts are directly related to the precision and quality of the die design and die parts.
    In industrial production, tungsten steel punch is widely used in stamping mold. We can make different shapes punch according to the different requirements of the product, and be used for batch machining hole. Especially the tungsten steel stamping mold components is used in the whole production, such as mobile phone, computer chassis, electrical appliances such as the cooling hole. Ordinary drilling machines, lathes and milling machines can only process round holes, and the efficiency is quite low. While stamping process, large punch can process several hundred holes at the same time and only takes a few seconds. The scale of production efficiency has increased significantly. In particular, the large batch production of automatic precision machine tools, the use of stamping process to produce parts, whether the precision or quality is improved a lot of times.

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The principle of EDM machining of mold parts

 The EDM machining of mold parts is a kind of hot processing method. It can be converted into heat energy by using electric energy, which makes the work piece melt quickly. The phenomenon of arc discharge is generated in the gap between the electrode and the workpiece, and then the thermal effect on the workpiece. At the same time, the working fluid is gasification and blasting under the discharge pressure and heat, and blasting impact force washes away the melting part of the work piece. So repeatedly, it can be processed into the shape we want. It can be known that the discharge machining has nothing to do with the hardness of the workpiece, as long as the mold components material can be conductive can be processed.
    Ceramic, glass and other non conductor materials, generally can not be use the discharge to process. However, recent studies in recent years found that the use of a special way, non conductor materials can also be used for electrodischarge machining. Therefore, the discharge machining is the first to make the electrode, the shape of the electrode is consistent with the processing of the cavity.

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The preparatory work of optical curve grinding machining

     Optical curve grinding machine operator must have theoretical knowledge and practical training, and must have a work license.
    The preparatory work of optical curve grinding machining:
    The operator must know the machine's performance, machining range and accuracy according to the instructions of the machine. And be familiar with the function and operation method of the machine tool and the numerical control device and the computer.
    Check that all the switches and the knob and the position of the handle are correct.
    Start the electric control device for preheating.
    Start the machine to make it no-load operation, check the sensitivity of each switch and button and knob, and whether the lubrication system is normal.
    To be familiar with the mold parts processing procedures and programming origin.
    Adjust the sample figure, make the sample figure baseline and projector reference line coincide.
    Adjust the head down stroke, the upper and lower limit of the stroke is more than 10 mm of the workpiece.

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Mold parts manufacturer marketing model

 In the modern market conditions, the majority of mold parts manufacturer marketing model is determined by the two key factors. First, the efficiency of marketing channels. Two, the cost of marketing channels.
    The channel efficiency refers to the enterprise's products can be faster to provide more target customers by the marketing channels. The channel cost is refers to the capital that the enterprise pays for this kind of marketing channel, Including direct costs and indirect costs associated with the channel, for example, channel management costs, channel service costs, etc..
    Now, when mold parts manufacturer choose the marketing model, the product impact on the marketing model is gradually reduced, the impact of the channel is gradually increasing, which is different from the past. Previously, many products tend to take direct marketing mode. Now, the product marketing mode is a combination of a variety of channels of the model, such as direct marketing, internal and external agents, etc.. The new marketing mode has brought new impetus to the development of enterprises.

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The assembly requirements of punching mold parts

The precision of the punching mold parts should meet the national standard, the height of the die should be in accordance with the requirements of the drawing.
    The upper die can slide along the guide column smoothly.
    The blanking clearance shall be in accordance with the drawing requirements and distribute evenly. The range of motion of the male die and female die must be in accordance with the technical requirements.
    The relative position of the positioning device and the stopper device shall be in accordance with the requirements of the drawing.
    Unloading device and ejection device relative position should be consistent with the requirements of the drawings. The work site does not allow any tilt or swing.
    The fastener assembly should be reliable. For example, the length of the screw thread; the length of the pin.
    A feeding hole and a discharge groove should be smoothly.
    Standard mold parts shall be interchangeable.
    The installation size of mold in the press on the need to meet the requirements of equipments; lifting parts should be safe and reliable.
    Before the formal batch processing, mold manufacturing should be small batch test, the product should meet the design requirements.

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