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Liquid-state casting method of material-grinding tool

A tool and abrasive technology, applied in the field of liquid casting of abrasive tools, can solve the problems of easy falling off of abrasive particles, easy blockage, difficult alloy state of the matrix, etc., to improve processing efficiency and service life, reduce production cycle and cost, The effect of improving control accuracy

Active Publication Date: 2011-11-02
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of studies believe that only when chemical bonding occurs between the bonding agent and the abrasive, the abrasive particles can be firmly held, not easy to fall off, and the abrasive tool has a high grinding efficiency and service life; but considering the thermal stability of the abrasive, the sintering temperature Generally low, the matrix is ​​difficult to form a real alloy state, and cannot fully form a chemical bond with abrasive particles
[0004] In the second electroplating method, the abrasive particles in the electroplated abrasive tool are only mechanically embedded in the plated metal, and the holding force is small. The abrasive particles are easy to fall off during heavy-duty high-efficiency grinding, or the plated layer peels off in pieces, resulting in overall failure. ; However, increasing the thickness of the coating to increase the holding force will reduce the exposed height and chip space of the abrasive particles, which is prone to blockage, poor heat dissipation, and burns on the surface of the workpiece
These disadvantages greatly limit the application of electroplated abrasive tools in high-efficiency grinding, so electroplated abrasive tools are generally used in occasions where the grinding load is small

Method used

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  • Liquid-state casting method of material-grinding tool
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  • Liquid-state casting method of material-grinding tool

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0029] The liquid casting method of abrasive tools is realized through the following steps:

[0030] A. Prepare a suitable casting mold and mold temperature control system according to the shape and characteristics of the single-layer grinding wheel of the diamond tool to be prepared;

[0031] Among them, the principle of the mold temperature control system is as follows: figure 2 As shown, the forming mold 1 uses cooling water as the medium, and the cooling water flows through the water pressure gauge, the water temperature gauge, the first manual flow regulating valve, the first electromagnetic flow regulating valve and the flow meter connected by pipelines, and then enters the forming mold 1 , after flowing out from the molding die 1, flow through another water thermometer to measure the temperature and then flow out. The pipeline connecting the first manual flow regulating valve and the first electromagnetic flow regulating valve is connected in parallel with a spare coo...

Embodiment 2

[0042] The liquid casting method of abrasive tools is realized through the following steps:

[0043] A. Prepare a suitable casting mold and mold temperature control system according to the shape and characteristics of the diamond tool multilayer grinding wheel to be prepared;

[0044] B. Select tin bronze ZQSn 6-6-3 as the matrix material 2, add chromium element, and smelt in a vacuum environment to make the matrix metal become molten liquid metal;

[0045] C. Pour the liquid carcass material with a temperature of 1150°C into the forming mold in step A, and add diamond particles by spraying or sputtering during the pouring process. The pouring time is ≤3s, and it is controlled by the mold temperature control system The cooling temperature of the carcass metal;

[0046] Among them, the cooling method is to cool down to 1050°C after the rapid pouring is completed, then keep the temperature for 6 minutes, and then cool at a cooling rate of 20°C / min.

[0047] D. After the liquid c...

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Abstract

The invention discloses a liquid-sate casting method of a material-grinding tool, which is realized through the following steps of: A, preparing a molding die for casting the material-grinding tool; B, arranging and distributing a plurality of material-grinding grains in an inner cavity of the molding die; C, smelting a matrix material into a molten liquid-state matrix material; D, pouring the liquid-state matrix material into the molding die and controlling the cooling temperature of the matrix material by using a die temperature controlling system; and E, after the matrix material is cooled and molded in the molding die, removing the molding die and taking out a cast part with the material-grinding grains, wherein the cast part can be made into the material-grinding tool conveniently. The liquid-sate casting method of the material-grinding tool disclosed by the invention can be used for increasing the force for the matrix material to hold the material-grinding grains, thus the service performance of the material-grinding tool is improved, the service life of the material-grinding tool is prolonged, and additionally, the producing and manufacturing cycle of the material-grinding tool can be shortened.

Description

technical field [0001] The invention relates to a manufacturing method of an abrasive tool, in particular to a liquid casting method of the abrasive tool. Background technique [0002] Abrasive tools are widely used in precision machining, material sawing, drilling and other engineering fields in engineering applications, and abrasive tools mainly have the following two preparation methods: sintering and electroplating. [0003] In the first sintering method, through sintering, the bonding agent and the abrasive particles form mechanical clamping, chemical bonding or a combination of the two. A large number of studies believe that only when chemical bonding occurs between the bonding agent and the abrasive, the abrasive particles can be firmly held, not easy to fall off, and the abrasive tool has a high grinding efficiency and service life; but considering the thermal stability of the abrasive, the sintering temperature Generally low, the matrix is ​​difficult to form a rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00
Inventor 徐西鹏林开荣黄辉
Owner HUAQIAO UNIVERSITY