Cold-work mould steel material and alloy modifying agent

Abstract

The invention relates to a cold-work mould steel material and an alloy modifying agent. In addition to Fe, the cold-work mould steel material further comprises the following elements in percentage by weight: 1.55%-1.75% of C, 11.50%-12.50% of Cr, 0.20%-0.30% of V, 0.45%-0.55% of Mo, not more than 0.25% of Si, not more than 0.20% of Mn, not more than 0.030% of S, not more than 0.030% of P, not more than 0.15% of Ni and not more than 0.2% of C. In addition to Fe, the alloy modifying agent further comprises the following elements in percentage by weight: 14.0%-20.5% of RE, 3.0%-4.5% of Mg, 25-30% of Si, 3.0%-4.0% of Mn, 3.0%-5.0% of Ca and 1.5%-2.5% of Ti. Compared with the prior art, the cold-work mould steel material can be applied to casting, and the performances of the cold-work mould steel material can be improved after the alloy modifying agent is added. A cold-work mould module can be manufactured by a casting process, so that the energy resources are saved, the material waste is reduced and the production period is greatly shortened.

Description

technical field [0001] The present invention relates to cold work die steel, more specifically, relates to a kind of cold work die steel material and alloy modification agent. Background technique [0002] The existing cold work die steel materials cannot be applied to casting, or the castings obtained by casting have defects in performance. Therefore, the traditional forging of cold work die steel raw materials mostly adopts the direction-changing forging method. The main forging process is: upsetting- The disadvantages of elongation-upsetting are: the forging process is complicated, the cost is high, and the processing efficiency is low, and the forging module is a simple square or cylinder, which is quite different from the actual shape of the cold-working mold module, and it needs to be reworked. machining. In the machining process after forging, the amount of machining is large, which will cause a lot of waste of materials and energy. Contents of the invention [00...

AI Technical Summary

Problems solved by technology

[0002] The existing cold work die steel materials cannot be applied to casting, or the castings obtained by casting have defects in performance. Therefore, the traditional forging of cold work die steel raw materials mostly adopts the direction-changing forging method. The main forging process is: upsetting- The disadvantages of elongation-upsetting are: the forging process is complicated, the cost is high, and the processing efficiency is low, and the forging module is a simple square or cylinder, which is quite different from the actual shape of the cold-working mold module, and it needs to be reworked. Machining

In the machining process after forging, the amount of machining is large, which will cause a lot of waste of materials and energy

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