Gas protecting means for preparing superhard abrasive material tools through induction brazing

A gas protection device and induction heating technology, applied in the direction of manufacturing tools, auxiliary devices, metal processing, etc., can solve the problems of substrate microstructure and diamond abrasive performance adverse effects, protracted production cycle, long heating and cooling time, etc., to achieve improved The effect of welding quality, welding firmness and stable chemical properties

Inactive Publication Date: 2008-05-14
徐州华谐科技发展有限公司
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Problems solved by technology

[0005] The inventor of this patent has conducted in-depth and systematic research on the manufacture of superhard abrasive tools by brazing in a vacuum resistance heating furnace. The manufacture of various tools by brazing in a vacuum resistance heating furnace requires both heating equipment and high-vacuum equipment, and the cost is v...

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  • Gas protecting means for preparing superhard abrasive material tools through induction brazing

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Embodiment Construction

[0024] As shown in Figure 1, Figure 2, and Figure 3, a gas protection device for making superabrasive tools by induction heating brazing is characterized in that the device includes a frame, an induction heating system, a gas protection chamber, a workpiece lifting system, The workpiece rotation system has five parts.

[0025] The frame includes a base 18 , an upper fixed plate 7 and guide columns 17 ; the lower ends of the four cylindrical guide columns 17 are connected to the rectangular base 18 , and the upper ends are connected to the square upper fixed plate 7 .

[0026] The gas protection chamber includes a quartz bell jar 3, an upper sealing plate 4, and a lower sealing plate 9; the lower part is cylindrical and the upper part is hemispherical. In the groove, the high-temperature sealing grease 6 is filled in the annular groove; an exhaust hole 1 is made on the upper end of the quartz bell jar 3; a protective gas inlet 5 is made on the cylindrical surface of the cylindr...

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Abstract

The invention discloses a gas protection unit for making superhard grinding medium tools with induction heating brazing, which is suitable for the brazing of the superhard grinding medium (such as diamond, cubic boron nitride) tools. The invention comprises a rack, an induction heating system, a gas protection system, a workpiece lifting system, and a workpiece rotating system. When in use, one or two or more protection gases among hydrogen, nitrogen, carbon monoxide, argon, helium are filled to the quartz clock cover, and can also be vacuumized to prevent the oxidation of the solder and the base when high temperature brazing, the damage of superhard material and the graphitization of diamond. When brazing, the workpiece rotate, rise and fall in the protection room, which can realize the proper position for the workpiece in the induction heating ring, thus the uniformization of temperature in the brazing area of the workpiece surface is ensured.

Description

technical field [0001] The invention relates to a welding machine, in particular to a gas protection device for induction heating and brazing of superabrasive (diamond, cubic boron nitride) tools. Background technique [0002] At present, superabrasive (diamond, CBN) tools mainly include electroplating tools, sintering (heat curing) tools and brazing tools. Electroplated superabrasive tools only rely on coating machinery to embed abrasives, and there is no bonding strength at the interface between superabrasives and coatings; sintered superabrasive tools are made by sintering compacts mixed with metal powder and superabrasive particles. There is neither infiltration nor bonding strength on the interface between the superabrasive and the matrix material. These two kinds of tool abrasives will fall off prematurely due to insufficient holding force during heavy-duty operations, resulting in low abrasive utilization and short tool life. In recent years...

Claims

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Application Information

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IPC IPC(8): B23K1/002B23K3/00B23K3/08
Inventor 董秀兰
Owner 徐州华谐科技发展有限公司
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