Die steel, mould manufacturing base
Clicks : 871 Published : 2024-04-29
As China's economy continued rapid growth, the domestic mold manufacturing industry rapid development is faster than GDP growth. This also for the development of the domestic steel provides a huge market, led to the domestic steel output, varieties, specifications and quality level of increase rapidly. As the matrix of mould manufacturing, the performance of the steel quality directly affect the service life of mould, the cost of production and a series of factors, has been more and more attention to by more mold manufacturers.
For the development of new type of cold work die steel
Mr Anda modest one: the auto industry has long been regarded as traction motive force of the national industry. At present, the auto manufacturers in order to achieve the goal of lightweight, safety design, rapid expansion of high strength steel plate (super hard,) the effective use of. However, from the difficult on the formability of stamping process itself, die life problem but is on the agenda.
Mold industry faces, on the other hand, lower costs and shorten coordination &liaision instead is imminent. So both industry the most desire to develop easy to the size of the cutting, heat treatment after deformation and less mould material. Hitachi metals at more than 100 steel accumulated experience and combining the development power, develop beyond material SKD11 often features for the next generation of cold work die steel, the SLD - MAGIC.
With improved 8% Cr steel SKD11 steel (the company commodity SLD8) contrast test, high performance new cold work die steel SLD - MAGIC in improve die life, reduce the total cost and shorten the mold production coordination &liaision instead show a considerable advantage. Mainly embodied in the following aspects:
- abrasion resistance: the highest hardness in HRC62 its wear resistance increase about 35%, to improve the die life.
- surface process: surface treatment film method such as (CVD) as a sex increase about 30%, prevent the bending of high strength steel, such as tensile forming when the scratches.
- heat treatment features: heat treatment "growing by about 40%, the shape of the deviation will be improved. For heat treatment and surface treatment of the size of the deformation quantity is little, reduce the time to repair.
- cutting: cutting resistance increase about 35%, based on the machining efficiency, shorten processing time on the mould manufacturing.
Wear resistance, heat treatment, surface above reason, the characteristics of cutting the sex value is the representation of the comparison with the company material SLD8 number According to, it may be slightly different income characteristic value and the actual products.
The rapid development of the mould and die industry puts forward new requirements for steel
Dr. Li shi: generally speaking, technical standards in addition to the drawings include the selection of die material, specific heat treatment process, control of discharge processing, surface roughness, mold parts (such as die-casting touch thimble) surface treatment etc. This requires die steel suppliers can provide for different application requirements of high performance die steel, and the ability to communicate with mold maker about material performance outside of the mould manufacturing technical specification specified in the technical requirements, such as surface coating process. Oberon - dewar mould technology (wuxi) co., LTD. Is able to provide the mould maker French President - dewar manufacture high quality mold steel and existing sales team to be able to communicate with the mould manufacturer specified in the technical specifications to foreign buyers. Companies to provide hot-work die steel, cold work mould, plastic and glass steel products. In some applications, such as high pressure die casting mould, such as French President - dewar has its default production specification. The products are specified and approved by European and American automobile manufacturers. Its product quality is higher than the European and American industry technical specification (such as NADCA North America die casting society specification) and ensure the stability of the die life and longevity. Application on this, the "brand - dewar ADC3 is especially suitable for the large mould applications. Currently one of the auto industry development trend is made large pressure casting aluminum, magnesium alloy parts, such as automobile engine cylinder block. Manufacturing such products for the mold steel thickness above 300 mm, in three dimensions and forging steel quality is first selection. The "dewar has its unique feature in three-dimensional forging factory, to ensure that the use of material performance of three dimensional uniformity. In addition to the "brand - dewar SMV3W (ESR) 1.2343, SMV4S (ESR) 1.2344 also manufacturers designated by a car. In Europe, the above three kinds of products in the practical application shows good performance and extend the die life, thereby reducing the cost of single parts price. In some applications, such as the production of automobile gearbox shell, manufactured ADC3 steel mold its life reached more than 200000, far higher than that of the commonly used ESR steel grade 1.2344.
Application in plastic moulds, Oberon - dewar manufacture steel X15TN adopted nitrogen to replace carbon alloy elements of the manufacturing process, to ensure the good polishing performance of the steel grade. X13T6W (S236), MEK4 SMV3W was used in automobile headlights glance on the plastic parts, has an excellent polishing performance, no common polishing pinhole phenomenon. The very low content of impurities of each steel grade, product impurities content of sulfur (S) within the 5 PPM, oxygen content within 10 PPM.
Along with the high-speed development of mold manufacturing, mold suppliers must have the ability to provide high quality, high performance die materials to meet the requirements of the customers. At the same time, the supplier must have to provide clients with sales expert team system application suggestion. In this regard, the "dewar companies can provide customers with excellent products and services to promote the improvement of the whole mould manufacturing level.
Die steel r&d of new material
Village on Mr. Luckily he: DRM is Japan datong steel developed in recent years, in order to achieve the high hardness, high toughness, high speed steel matrix, and the makes rough carbide to reduce to the limit, increase service life, reduce the mold cost.
Called matrix high speed steel, because it is different from general common high speed steel after heat treatment in crystal carbide precipitation (carbide) and carbide (secondary carbides) still exist, not solid solution to the matrix, high speed steel after heat treatment and DRM matrix crystal carbide precipitation and solid carbide can dissolve into the matrix, reduce bulky crystal carbide, thereby better suppress the occurrence of cracks and increase toughness. Mould in use there will be a big crack, tiny crack (crack) of fatigue and wear condition, in order to prevent this kind of situation, should increase the toughness, fatigue strength and improve the hardness, it is also a DRM, the necessity of high hardness and high toughness steel matrix and particularity.
DRM series is divided into DRM1, DRM2 and DRM3, can apply multiple range.
DRM1 hot-work tool steel by is achieved generally not high speed steel with high hardness and high toughness matrix, compared with the previous matrix high speed steel toughness, suitable for all kinds of hot, warm forging die. Mainly used in hot forging punch and die; Forging temperature between the punch and die. Its main features are: (1) under the highest hardness of 58 HRC can be used. (2) high hardness, high toughness and thermal cracking resistance is also good. (3) and hot die steel has the same level of micro organization, compared with the active matrix high speed steel with high toughness. (4) high softening resistance, high temperature strength and good. (5) because it is special dissolving, non-metallic inclusion, good uniformity.
DRM2 are widely between corresponding to temperature, cold room pressure build tools, such as high speed steel under the condition of a heavy work of substrates. The matrix of high speed steel is higher than ever, high hardness and toughness, suitable for all kinds of temperature, temperature forging, cold forging, powder metallurgy die. Mainly used in the temperature between forging punch and die; Cold forging between the punch and die. Its main features are: (1) under the highest hardness 62 HRC can be used. (2) the organization fine, high toughness values, good fatigue properties. (3) good hardenability, coarse size material and vacuum heat treatment quenching can also maintain high performance. (4) because it is special dissolving, non-metallic inclusion, good uniformity.
Based on previous MH85 DRM3 to ascend, the high hardness and high toughness is suitable for forming of high precision products vacuum hardening high speed steel. Suitable for all kinds of cold room mold. Mainly used in cold forging punch and die; Cold work roll, roll carving; Vacuum hardening of high speed tool steels, tool. Its main features are: (1) under the highest hardness 66 HRC can be used. (2) with fine carbides, compared with SKH51 high toughness, high fatigue strength. (3) good hardenability, thick diameter material and vacuum heat treatment furnace quenching can maintain high performance. (4) because it is special dissolving, non-metallic inclusion, good uniformity.
