Method for producing hard alloy bar

Abstract

The invention discloses a method for producing a hard alloy bar. The hard alloy bar is composed of the following raw materials of, in parts by weight, 86-91 parts of tungsten carbide, 1-6 parts of cobalt carbide, 1-2 parts of titanium carbide, 0.2-0.5 part of nickel carbide and 0.2-0.5 part of chromium carbide. According to the method, firstly, chromium carbide and nickel carbide are added so that the strength, hardness and abrasion resistance of the alloy bar can be remarkably improved, the attractiveness and cleanliness of the alloy bar are enhanced, and the requirement for chromium raw materials is reduced; a filter screen is placed at a discharging opening of a ball grinding machine, secondary wet grinding needs to be carried out on a mixture which does not meet the requirement, the primary wet grinding time is 30 h, and each of the later wet grinding time is reduced by half, so that the wet grinding effect of materials is improved, and the mixture can be better treated and machined in the subsequent process; and a comprehensive grinding method combining a longitudinal grinding method and a transverse grinding method is adopted in the external rounding and accurate grinding process of the profile alloy bar, the surface of the alloy bar can be effectively ground through the comprehensive grinding method, and meanwhile the working efficiency can be improved.

Description

technical field [0001] The invention relates to the field of alloy rod production, in particular to a cemented carbide rod, in particular to a production method for a cemented carbide rod. Background technique [0002] Tungsten carbide rods, also known as tungsten steel rods, have stable mechanical properties, easy welding, high wear resistance and high impact resistance, and are mainly used in the manufacture of metal cutting tools. The hardness and wear resistance required by wood and plastics are Industries such as the manufacture of corrosive products; [0003] However, the main synthetic materials of existing cemented carbide rods are tungsten carbide and chromium carbide, and the chromium resources in my country are affected by the storage and development costs, and the supply is difficult to meet domestic demand, making imported raw materials the main source of chromium demand; secondly , when the existing alloy rods are produced, all the main materials are mixed and ...

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Problems solved by technology

[0003] However, the main synthetic materials of existing cemented carbide rods are tungsten carbide and chromium carbide, and the chromium resources in my country are affected by the storage and development costs, and the supply is difficult to meet domestic demand, making imported raw materials the main source of chromium demand; secondly , when the existing alloy rods are produced, all the main materials are mixed and then wet-grinded, but the wet-grinding time is too long, and the fineness of the wet-grinded materials cannot be judged, which affects the subsequent processing; secondly, During the production of existing alloy rods, due to the time course of the pre-process, in order to improve the production efficiency in the final external round fine grinding process, a single longitudinal grinding method or horizontal grinding is usually carried out according to the use of the alloy rods. method, which in turn affects the subsequent use of alloy rods