Our country has made into a high-speed development. The next five to 10 years, automobile industry, chemical industry, electronic and the rapid development of the industry, will drive the development of the manufacturing industry in mechanical, and mould industry as a machinery manufacturing parts of the molding process equipment products but also to advance development, it will give the mould material production from smelting quality, production process and heat treatment technology bring development of space. But because the independent intellectual property rights of the mould new material less, die life is low, mould enterprise struggle to find a new kind of reliable homemade dies instead of imported steel mold. The domestic high-quality, high life ReZuo new kinds of steel development and promotion work in a relatively stagnation.

Along with the continuous development of mold industry, to high-grade mould steel imports climbed, is expected to die steel imports will increase by a wide margin, and especially the mold cavity mould parts in a short time the pattern of import very difficult to change, our country with steel mold import mainly from Japan, Germany, Sweden, Austria, South Korea and other countries. According to international mould and hardware and plastic industry, director of the institute of ROM the supplier in China every year, Fraser is introduced about 20% share, 100000 tons, contract of RMB 6 billion of steel products need to be imported, it up almost the whole steel mold in the high-end market. And the import steel prices higher than domestic same kind products several times or more than ten times. The main reason is the pure quality steel abroad, annealing organization and impact toughness single parameter, steel quality uniform, organization, such as small, size precise foreign H13 steel standard control index the most up to eight, and our country standard only three items. At present domestic steel alloy with Sweden, Germany, the United States, Japan, France and other international advanced level compared, in the varieties, quality, specification and performance are a big gap between the high-end market, to meet demand.

ReZuo steel, steel basic to cold die and mould plastic three series give priority to. In ordinary steel mold has now been excess, but high-end, precision and long life of the steel products with foreign and large gap, the main difference is dramatically in the index. Academician of Chinese academy of engineering, mechanical science &technology (deputy chief engineer, said ChenYunBo homemade common H13 steel die casting die life for 30000 ~ 50000 die, and imported high quality time H13 steel die casting die life can reach 200000 times. The production practice shows that scale unceasingly expands Chinese steel industry still not out of the "big but not strong" of the vicious circle.

In recent years, along with the rapid development of China mold and die industry, for domestic steel mold provides a huge market, drive the domestic steel mold production, variety, specifications and quality level improvement. Metallurgical industry in our country developed and introduced a lot of steel grade.these steel mold industry for domestic steel mold, but no matter in variety and quality is still hard to meet all domestic die the demand of the market. International mould and hardware and plastic industry, director of the institute of ROM the supplier Fraser points out, the domestic steel market already behind the development of die and mould industry, also can't well adapt to the needs of the mould industry, mainly in the following aspects:

First is the steel production technology, poor quality of steel behind. Such as domestic steel h13 general, d2 and ld varieties such as inner quality all can reach the standard astma681 steel, which is the international general level, basically can satisfy the domestic and foreign general mold the use of user. But to a high standard of the high demand for steel users put forward, such as impact toughness, carbide low residual elements such as partial control, high quality and long life requirement, it is not meet. Such as cold die requirements at low temperature resistance, resistance to wear with plastic into shape, resistance to collapse, fight whole crack Angle, machinability and grinding various performance. Sex And plastic mould steel are required to have high finish surface resistance, corrosion resistance, abrasion, high heat conductivity, machine machining, polishing sex, etching properties.
 

1, domestic new modern enterprise to steel mold (module) usually have heat treatment and machining requirements. If ReZuo steel mold for once six surface machining, heat treatment and The steel flat look less than 0.5 mm round the precision requirement; Plastic mould usually require after finishing conditioning supply, etc. State But these requirements at present some steel is difficult to meet all.

2, the steel supply time to put forward higher requirement. Fast rhythm, modern production requirements, mould manufacturing cycle is short, generally in about 30 days. Design and preparation period of no more than 10 days, and ask the same time. This requires delivery only five days of steel and the term of up and down, and mould manufacturing enterprise is the basic tool for "zero inventory" management pattern, which day open mode, which day buy material. This requires the steel mills must meet the end user of the modern production demand for embryos.

3, requirements for steel and steel quality and life that guarantee and commitment. Thanks to modern, large, complex and long life of the mould processing cost extremely expensive, so the manufacturer of steel quality and the service life of Paramount concern, would rather spend more money, make sure the quality of steel products. If domestic meet, they would rather imported from abroad.

ROM. The brightness points out, die of output value of mould with materials around 20%, but its quality fit and unfit quality will be the most direct impact of the mould and die materials used performance, is the development of a long-term systematic project requirements, development, production and sales and technical service one continuous line. Steel market in China more than 80% is black, steel bar feeders half-round bars and the hardening process of less, most after steel forging steel still needs to graduate school after use, forging process control not strictly, inner quality is poorer, steel utilization rate is lower; Although domestic steel production factory has the most advanced smelting equipment and process production, such as outside the furnace concise, the vacuum takes off gas, electricity slag remelting, precision forging such as fine rolling method, but with foreign advanced steel mold factory there is gap compared. So steel mold enterprise to expand advanced process steel production, strengthen the proportion of new technology, new equipment, the introduction of improved production process, improve the management, produce pure and good uniformity, large size of mold steels. During the 1025, on the one hand, the mould industry will die materials to put forward higher technical requirements, on the other hand facing long-term dependence on imported a lot to support the die materials in China mould industry development, devoting major efforts to developing China's mould material and new technology, new technology, new varieties.

The key development quality mould material

"1025" period with the development of the manufacturing industry of mould tool, and also puts forward a new technical requirements. Mould manufacturing diversification, large-scale, precision and the development trend of sclerosis also requires special steel increase in the development and promoting the development of domestic high quality mould material. According to international mould and hardware and plastic industry, director of the institute of ROM the fai supplier in China is introduced, the development direction of the steel mainly embodied in the following aspects:
 

 One is to high precision mould, large-scale direction, to no deformation of the hardened steel and big advance plastic specifications, large volume of the steel and increasing demand.

2 it is to high grade synthetic diamond, higher to sex, are also organization, the long life direction, and the requirements of the service life of die is getting higher and higher.

Three is to change direction, as far as possible products shorten mould processing cycle, therefore, ask the steel production enterprise can provide machined or steel heat treatment.

4 it is to the steel series and personalized direction. With the continuous renewal of steel products for the performance also put forward higher request, such as working temperature, corrosion resistance, cutting performance, etching properties, polishing performance, etc. According to different conditions, industrial steel formed series, and constantly meet the requirements of personalized.

In plastic steel mold, to develop large specification car bumper the hardening plastic steel mold, single heavy reach the 35 tons of large plastic mould hardened the module, replace imported products; Development: 400 mm thickness of big norms precipitation sclerosis type plastic steel module; the mirror Development of new corrosion resistant plastic steel mold, meet the special plastic (containing fluorine, chlorine, etc.) to the steel corrosion resistance of high demand.

In ReZuo steel mold, to develop with independent intellectual property rights of the new type of low cost, high life ReZuo steel mold, development of pure, organization of the uniform ReZuo steel mold, very low S, P content and organization, are also added to the role of rigid with red alloy elements improve die under high temperature of hardness, improving the heat die-casting molds and the service life of the hot extrusion dies.

In the cold die aspects, and should in car high strength steel plate (tensile strength > 800 MPa) cold stamping forming die material and surface treatment technology. Development with low-alloy and high wear resistance and toughness is cold die. Through the lower carbon content and total alloy elements improve toughness and wear resistance.