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Manufacturing method of ultrahard wear-proof honing stone

A technology for honing whetstone and a manufacturing method, applied in the field of honing whetstone, can solve the problems of single grinding characteristics and unsatisfactory grinding effect, and achieve the effect of high strength, high toughness and high strength guarantee

Inactive Publication Date: 2018-09-04
ZHENJIANG N E T DIAMOND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The honing whetstone composed of a single abrasive in the prior art, due to its single grinding characteristics, has a limited grinding effect on some difficult-to-machine materials, and has certain limitations in use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for manufacturing a superhard wear-resistant honing whetstone, the specific steps are:

[0025] S1: Melting and mixing of raw materials: put alumina, ferrochrome and ferrotungsten into a vacuum induction furnace in proportion, bring the vacuum in the vacuum induction furnace to 65Kpa, raise the temperature to 2150°C, and fill it with inert gas, refining for 10 minutes; then keep The temperature in the vacuum induction furnace is 1400°C, stir for 12 minutes, then cool down, exit the vacuum induction furnace, and cast into metal rods;

[0026] Among them, the ratio of medium alumina, ferrochrome and ferrotungsten is 6:2.7:1, alumina is brown alumina, ferrochrome is medium carbon ferrochrome, and ferrotungsten is FeW80;

[0027] S2: Electron beam purification treatment: place the metal rod in the electron beam melting furnace body, adjust the vacuum degree in the electron beam melting furnace body to 60 Kpa, increase the beam current to 120mA at the speed of 1.2mA...

Embodiment 2

[0033] A method for manufacturing a superhard wear-resistant honing whetstone, the specific steps are:

[0034] S1: Melting and mixing of raw materials: put alumina, ferrochrome and ferrotungsten into a vacuum induction furnace in proportion, bring the vacuum in the vacuum induction furnace to 70Kpa, raise the temperature to 2050°C, and fill it with inert gas, refining for 15 minutes; then keep The temperature in the vacuum induction furnace is 1400°C, stir for 10 minutes, then cool down, exit the vacuum induction furnace, and cast into metal rods;

[0035] Among them, the ratio of medium alumina, ferrochrome and ferrotungsten is 6:2.7:1, alumina is brown alumina, ferrochrome is medium carbon ferrochrome, and ferrotungsten is FeW80;

[0036] S2: Electron beam purification treatment: place the metal rod in the electron beam melting furnace body, adjust the vacuum degree in the electron beam melting furnace body to 65 Kpa, increase the beam current to 120mA at the speed of 1.2mA...

Embodiment 3

[0042] A method for manufacturing a superhard wear-resistant honing whetstone, the specific steps are:

[0043] S1: Melting and mixing of raw materials: put alumina, ferrochrome and ferrotungsten into a vacuum induction furnace in proportion, bring the vacuum in the vacuum induction furnace to 68Kpa, raise the temperature to 2080°C, and fill it with inert gas, refining for 12 minutes; then keep The temperature in the vacuum induction furnace is 1400°C, stir for 11 minutes, then cool down, exit the vacuum induction furnace, and cast into metal rods;

[0044] Among them, the ratio of medium alumina, ferrochrome and ferrotungsten is 6:2.7:1, alumina is brown alumina, ferrochrome is medium carbon ferrochrome, and ferrotungsten is FeW80;

[0045] S2: Electron beam purification treatment: place the metal rod in the electron beam melting furnace body, adjust the vacuum degree in the electron beam melting furnace body to 63 Kpa, increase the beam current to 120mA at the speed of 1.2mA...

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Abstract

The invention provides a manufacturing method of ultrahard wear-proof honing stone. The manufacturing method particularly comprises the steps of raw material melting and mixing, electron beam purification, breaking treatment, mixing treatment and sinter molding. Compared with the prior art, the method has the benefits that aluminum oxide, ferrochrome and ferrotungsten are broken to form high fineness spherical powder which is intensively mixed with diamond powder; aluminum oxide, a chromium element, a tungsten element, a ferrum element and diamond are integrated; the wear resistance of the honing stone finished product is greatly improved; an alloy is subjected to electron beam melting; harmful impurity elements such as O, N and S in an alloy melting process can be greatly reduced; the purity of the alloy is improved from an angle of reducing a harmful element content; high strength, high toughness and high corrosion resistance of a metal are guaranteed; brown aluminum oxide is adopted; an aluminum oxide content in brown aluminum oxide is 96%; and the stone is applicable to large allowance honing of most steel heavy parts under a heavy duty condition and machining of various forging parts.

Description

technical field [0001] The invention relates to the technical field of honing whetstones, in particular to a method for manufacturing a superhard wear-resistant honing whetstone. Background technique [0002] Honing is the finishing process of the finished surface with the oilstone (also called honing stick) embedded in the honing head. The contact area between honing and the hole surface is larger, and the processing efficiency is higher. Under certain conditions, flat surfaces can also be processed. The dimensional accuracy of the hole after honing is IT7-4. The dimensional accuracy of the hole after honing is IT7-4, and the surface roughness can reach Ra0.32-0.04 microns. The size of the honing allowance depends on the hole diameter and the material of the workpiece. Generally, it is 0.02-0.15 mm for cast iron and 0.01-0.05 mm for steel. The speed of the honing head is generally 100-200 rpm, and the reciprocating speed is generally 15-20 m / min. In order to wash away ...

Claims

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Application Information

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IPC IPC(8): C22B9/22B22F9/04B22F3/14B22F1/00C22C29/12C22C26/00C22C1/10C22C1/05
CPCB22F1/0003C22B9/228C22C1/051C22C1/1036C22C26/00C22C29/12B22F3/14B22F9/04B22F2998/10B22F2009/043B22F2009/045C22C2026/008C22C1/1047Y02P10/25
Inventor 方国祥耿晨翔张恒松冷泠泠蒋阳王昭展
Owner ZHENJIANG N E T DIAMOND
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