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Manufacturing method of high-temperature jet steel

A manufacturing method and high-performance technology, applied in the manufacturing field of high-performance jet steel, can solve the problems of steel ductility, anti-chipping and anti-cracking performance, affecting the quality of die steel, etc., to achieve excellent toughness and wear resistance, impact The effect of toughness improvement and overall performance improvement

Active Publication Date: 2014-08-27
HEYE SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fast crystallization speed of the injection molding process, it is inevitable to generate voids containing nitrogen, which seriously affects the quality of the die steel, and reduces the ductility, chipping resistance and cracking resistance of the steel.

Method used

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  • Manufacturing method of high-temperature jet steel
  • Manufacturing method of high-temperature jet steel
  • Manufacturing method of high-temperature jet steel

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Embodiment Construction

[0027] The manufacturing method of the high-performance sprayed steel involved in the present invention has a design idea that in the subsequent processing steps of the sprayed steel, there is a homogenization treatment step for eliminating the nitrogen in the internal voids of the sprayed steel. In this embodiment, however, the steps of subsequent treatment of sprayed steel include an isothermal annealing step, a strong forging step and a complete annealing step, and the homogenization step is arranged between the isothermal annealing step and the strong forging step. In addition, in this embodiment, in order to further improve the performance of sprayed steel and solve the problem of coarse grains caused by long-time high temperature, a grain refinement step is also set between the strong forging step and the complete annealing step.

[0028] Based on the above description, the overall process flow of the high-performance spray steel manufacturing method of the present embodi...

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Abstract

The invention relates to a manufacturing method of high-temperature jet steel. A homogenizing method is adopted to overcome the defect that nitrogen is contained in gaps in the jet steel. The subsequent treatment process for the jet steel in the method comprises the steps: isothermal annealing; homogenizing; strong forging; grain refining; and complete annealing. By using the manufacturing method, not only is the defect that nitrogen is contained in gaps in a jet steel ingot eliminated, but also large-particle carbides inevitably generated in a molten jet steel solidification process can be decomposed, so that an alloy element is homogenized microcosmically, and die steel with high ductility, high toughness and uniform performances is produced. The high-grade die steel produced by using the method disclosed by the invention is low in cost and extremely wide in market prospect.

Description

technical field [0001] The invention relates to a method for processing spray-formed spray steel, in particular to a method for manufacturing high-performance spray steel. Background technique [0002] There are three main manufacturing processes for tool and die steels that are widely used at present. One is the traditional process of electric furnace, ladle refining, electroslag remelting, forging, and complete annealing; the other is a small number of high-alloy high-speed steel, high- Performance Cold work die steel and plastic die steel are made by powder metallurgy process; the third is spray forming smelting tool die steel which is still in the initial development stage. [0003] For the above preparation process, in order to improve the performance of the tool and die steel, the prepared tool and die steel is usually subjected to subsequent treatment, such as using a homogenization treatment process, which can decompose large particle carbides in the smelting of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/02B22F3/115C21D1/26C21D8/00
Inventor 冯英育米永旺张占普邵青立
Owner HEYE SPECIAL STEEL
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