Production technology of hard alloy cutter head

Abstract

The invention discloses a production technology of a hard alloy cutter head. The production technology is characterized by comprising the following steps that 1, a hard alloy head is selected, and theouter surface of the hard alloy head is wrapped with a layer of brazing filler metal; 2, the hard alloy cutter head well wrapped is placed into a parent body, and an alloy is embedded between the parent body and the hard alloy cutter head; 3, the parent body and the hard alloy cutter head are placed into a brazing equipment tool operating automatically for brazing, and brazing time is 10 s; 4, the parent body and the hard alloy cutter head well welded are placed into a heat preserving furnace for hot pressed sintering, and heat is preserved for 3.5 h at the temperature of 290 degrees. The production technology effectively improves the brazing lightness and the production quality of the hard alloy cutter head.

Description

technical field [0001] The technical field that the present invention relates to, specifically relates to the production technology of cemented carbide cutter head. Background technique [0002] Cemented carbide is what we often call tungsten alloy. It is a cermet composed of tungsten carbide and cobalt. It has high hardness and has many important industrial applications, such as fine grinding materials, high-hard cutting tools, various drill bits, Wire drawing dies, mining and metal processing, etc. [0003] The traditional tool making is generally to use a flame gun to heat the brazing place to melt the copper or silver solder to bond the steel and the hard alloy together. The traditional diamond tool production process has the following disadvantages: 1. The heating temperature cannot be precisely controlled, resulting in excessive oxidation of the solder. Moreover, the heating temperature cannot penetrate into the heart, and the uneven temperature makes it difficult fo...

AI Technical Summary

Problems solved by technology

The production process of this traditional diamond tool has the following disadvantages: One, the heating temperature cannot be accurately controlled, resulting in excessive oxidation of the solder

Moreover, the heating temperature cannot penetrate into the heart, and the uneven temperature makes it difficult for the hard alloy to react chemically with the metal. The carcass can only hold the diamond mechanically, and the holding force is not high, so the hard alloy is easy to fall off and cause waste; 1. The flow of solder is not uniform, and the solder is easy to gather, resulting in excessive local solder accumulation. The strength of the cutter head is high at the place where the solder is gathered, and the strength of the cutter head is low at the place where the solder is lacking, which in turn causes the tool to be stressed. Unevenness; 3. The traditional solder and flux use brass and borax, and the welding strength of cemented carbide and steel is only about 1.5Ton. Falling off, resulting in fluctuations in product quality and low product grades; 4. Traditional welding is highly dependent on labor, and there are many simple repetitive actions in production, which is likely to cause fluctuations in product quality. In addition, metal powder is easy to raise dust during operation and is not easy to recycle.

[0004] At present, the traditional hard alloy brazing workpieces use the high-temperature vacuum brazing process to directly braze the diamond on the base material through the brazing material. Generally, only single-layer brazing can be achieved. At the same time, the brazing temperature of the existing brazing materials is relatively high. High, generally above 900 degrees Celsius, there is thermal damage to the cemented carbide, and there is thermal damage in both production and application