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A kind of processing method of high-temperature conductive special cemented carbide tool

A technology of cemented carbide and processing method, applied in the field of material processing, can solve problems such as difficulty in achieving high density

Active Publication Date: 2017-07-21
CHANGZHOU AITEFASI TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing processing method is difficult to achieve high density, and the alloy body is required to be stable in performance when the alloy body is energized in a stable state

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for processing a special cemented carbide tool for high-temperature conduction, comprising the following steps:

[0018] (1) Wet milling: Weigh 99% tungsten and 1% chromium carbide respectively according to the mass percentage, add them to the wet mill, and ball mill for 36 hours; pass the mixed slurry through a 400-mesh sieve, discharge and precipitate, and separate Drop off the supernatant medium;

[0019] (2) Drying: Add the slurry obtained in the above step (1) into a double-helix mixer, vacuumize, pass hot water, and after the medium is dried, feed cold water to cool the slurry, and dry the mixed The material passes through the vibrating sieve;

[0020] (3) Forming: Take 40 kg of the mixture obtained in the above step (2) and add it to the mixer, then add 45 grams of molding agent, mix for 20 minutes, then put it into the mold of the extruder, and extrude it under a pressure of 800Mpa Pressing, after the extrusion is completed, carry out the flat head pr...

Embodiment 2

[0026] A method for processing a special cemented carbide tool for high-temperature conduction, comprising the following steps:

[0027] (1) Wet milling: Weigh 99% tungsten and 1% chromium carbide respectively according to the mass percentage, add them to the wet mill, and ball mill for 36 hours; pass the mixed slurry through a 400-mesh sieve, discharge and precipitate, and separate Drop off the supernatant medium;

[0028] (2) Drying: Add the slurry obtained in the above step (1) into a double-helix mixer, vacuumize, pass hot water, and after the medium is dried, feed cold water to cool the slurry, and dry the mixed The material passes through the vibrating sieve;

[0029] (3) Forming: Take 50 kg of the mixture obtained in the above step (2) and add it to the mixer, then add 45 grams of molding agent, mix for 30 minutes, then put it into the mold of the extruder, and extrude it under a pressure of 900Mpa. Pressing, after the extrusion is completed, carry out the flat head p...

Embodiment 3

[0035] A method for processing a special cemented carbide tool for high-temperature conduction, comprising the following steps:

[0036] (1) Wet milling: Weigh 99% tungsten and 1% chromium carbide respectively according to the mass percentage, add them to the wet mill, and ball mill for 36 hours; pass the mixed slurry through a 400-mesh sieve, discharge and precipitate, and separate Drop off the supernatant medium;

[0037] (2) Drying: Add the slurry obtained in the above step (1) into a double-helix mixer, vacuumize, pass hot water, and after the medium is dried, feed cold water to cool the slurry, and dry the mixed The material passes through the vibrating sieve;

[0038] (3) Forming: Take 45 kg of the mixture obtained in the above step (2) and add it to the mixer, then add 45 grams of molding agent, mix for 25 minutes, then put it into the mold of the extruder, and extrude it under a pressure of 850Mpa Pressing, after the extrusion is completed, carry out the flat head pr...

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PUM

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Abstract

The invention relates to the field of material processing, in particular to a processing method of a special hard alloy tool for high temperature conducting. The processing method comprises the following steps that (1) wet grinding milling is performed: 99% of tungsten and 1% of chromium carbide are weighed, subjected to ball milling for 36h, and then sieved by a 400-mesh sieve, and the discharged material is deposited; (2) drying is performed: a slurry obtained in the step (1) is added to a mixer and vacuumized, and hot water supplying and drying are performed; (3) forming is performed: a mixed material obtained in the step (2) and a forming agent are added to the mixer, mixed for 20-30min, then extruded, and subjected to flatting treatment, and a hard alloy tool blank is obtained; (4) trimming is performed; and (5) sintering is performed: the hard alloy tool blank is fed in a vacuum sintering furnace, vacuumized, and maintained at 1450-1465 degrees for 60-65min, and the hard alloy tool is obtained after discharging. The special hard alloy tool for high temperature conducting processed by the processing method has the following characteristics that the density of the hard alloy tool is controlled above 15.7; the hard alloy tool maintains very good alloy stability in a power-up state; and the electric conductivity of the hard alloy tool meets the work requirement.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a processing method of a special hard alloy tool for high-temperature electric conduction. Background technique [0002] It is a new type of special cemented carbide material for high-temperature conductive state. This product not only has the stability of cemented carbide material, but also has stable electrical work performance of the body material. Its performance density is greater than 15.7, various indicators conform to the stability of cemented carbide, and the overall performance is superior. The tool holder material used in the special processing environment of thermal conductivity has its unique positive significance, coupled with stable performance, it can open up a new way in the future market and win the largest market. The existing processing method is difficult to achieve high density, and the alloy body is required to be stable in performance when the alloy bod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/16B22F5/00
Inventor 胡金斌
Owner CHANGZHOU AITEFASI TOOLS