A production process that effectively improves the pass rate of cemented carbide round knife blanks

Abstract

The invention discloses a production technology increasing the yield of hard alloy circular knife workblanks effectively and belongs to the technical field of production of hard alloy knives. The specific technology comprises the steps of burdening, ball mill mixing, drying, sieving rubbing, compression and sintering, recovery devices are used in all steps, the inner structure stability and yieldof hard alloy finished products are ensured, and the purpose that quality of hard alloy finished workblanks is improved is achieved. Through the whole technology, the problems that in the prior art, afinished workblank technology is improved, and the production yield cannot reach the ideal condition can be solved, and very high pertinence is achieved. In the whole process, wet grinding temperature is controlled, cooling of the drying process and humidity of mixed materials are controlled, finally a wet grinding material boat is improved, then effective discharge of paraffin is controlled, theyield of the finished workblanks can be increased greatly, and product quality is ensured. Through the recovery comprehensive utilization devices of all the steps, energy can be saved, production cost is lowered, and market competitiveness is enhanced.

Description

technical field [0001] The invention belongs to the technical field of hard alloy production, and in particular relates to a production process for effectively improving the qualified rate of hard alloy round knife blanks. Background technique [0002] Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500°C , It still has high hardness at 1000 °C. With the needs of the market and the improvement of technology, the production of cemented carbide enterprises has also expanded. [0003] Due to the high price of cemented carbide, the production and processing costs are high. If the product qualification rate is not guaranteed, it will cause backfire and affect its performance, causing unnecessary losses to the enterprise and operators. In particular, the pr...

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Problems solved by technology

[0005] However, in the wet grinding process, the addition of absolute ethanol and paraffin at the same time is not effective in mixing with raw materials or the wet grinding time needs to be increased to improve the uniformity of mixing, and the temperature in the wet grinding process affects the performance of absolute ethanol and paraffin, and then The impact on the mixing effect, there are very few improved processes; in the drying process, the problem of water resources, the oxidation of the granular mixture during the cooling process, the control of the humidity of the granular mixture, and the problem of cooling on the mixture In the sintering process, the problem of effective collection of paraffin wax; these still exist in the prior art, and are also important factors affecting the pass rate of cemented carbide blanks, and it is urgent to solve these problems to further improve the pass rate of blanks

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