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Diamond grinding wheel and manufacturing process thereof

A manufacturing process, diamond technology, applied in the field of diamond grinding wheel and its manufacturing process, can solve the problems of wear, poor comprehensive performance of iron-based bond grinding wheel, sintering, etc., and achieve the effect of improving service life

Inactive Publication Date: 2018-12-21
江苏金港钻石工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the iron-based bond formula system is in the stage of exploration-experiment-practice. Although some are in use, there are many problems, such as wear problems, sintering problems, disturbance and toughness problems, etc., which lead to the comprehensive performance of the iron-based bond grinding wheel. poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Under the same grinding wheel production process and the same diamond particle size and concentration, three groups of homogeneous elements with different weight ratios are used to produce grinding wheels of the same shape, and then use homogeneous glass and the same processing requirements on the same production line for performance comparison .

[0021] The first group of formula: Fe 60wt%, Cu 20wt%, Sn 8wt%, Zn 2wt%, Co 3wt%, Ni 2wt%, Fe 3 o 4 2wt%, Ti 2wt%, SiC 1%.

[0022] The second group of formula: Fe 50wt%, Cu 30wt%, Sn 6wt%, Zn 2wt%, Co 2wt%, Ni 3wt%, Fe 3 o 4 3wt%, Ti 2wt%, SiC 2%.

[0023] The third group of formula: Fe 40wt%, Cu 35wt%, Sn 10wt%, Zn 2%, Co 3wt%, Ni 3wt%, Fe 3 o 4 3wt%, Ti 2wt%, SiC 2%.

[0024] The bond density of the above three groups of formulas is subject to the theoretical density, the sintering temperature is 800°C, and the sintering holding time is 60 minutes to produce a glass edging wheel with a diameter of 200 mm. Under t...

Embodiment 2

[0030] The fourth group of formulas: taking the above third group of formulas as the parent formula, combined with the problems in glass processing and production, the components of the third group of formulas are adjusted as follows: Fe 37wt%, Cu 35wt%, Sn and Zn 14wt% , Ni and Cr 3wt%, Co 6wt%, Fe 3 o 4 and Si 3wt%, C (graphite) 2wt%, the overall density of the binder should be less than the theoretical density, the diamond concentration is 60%, the diamond mesh is 200-230, the sintering temperature is 760°C, and the holding time is 40 minutes. The hot pressing time is 10 seconds, and the hot mold is demoulded after cooling for 30 minutes.

[0031] The diamond grinding wheel manufactured in this state shows the following conditions during production and processing:

[0032] (1) About 5-10 minutes after the grinding wheel is on the line, the processed glass has a slight sharp edge phenomenon, and after gradually reducing the edge grinding is normal, and the fog edge is unif...

Embodiment 3

[0039] On the basis of the fourth group of formula and sintering design, the fifth group of formula and sintering design is formulated: Fe 36wt%, Cu38wt%, Sn and Zn 13wt%, Ni and Cr 3wt%, Co 5wt%, Fe 3 o 4 And Si 4wt%, C (graphite) 1wt%; the mesh number of diamond is selected as 170-200, the diamond concentration in the binder is set to 70%, and the volume occupied by diamond is removed, and the density of the binder is based on the calculated theoretical density. , the pressure design is 700kgf / cm 2 The cold pressing time is about 3-5 seconds, the hot pressing time is designed to be about 10 seconds, the sintering temperature is 820°C, and the holding time is 60 minutes. The results of processing 3.2 mm glass with a grinding wheel with a diameter of 200 and an aluminum core of 3.8 notches produced in this state are as follows:

[0040](1) The comprehensive performance of the grinding wheel is better than that of the fourth group of formula sintering design. There is almost ...

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Abstract

The invention discloses a diamond grinding wheel which comprises a base body, a grinding material layer and a transition layer. The grinding material layer comprises diamond, an iron-based bonding agent and an air hole; the iron-based bonding agent is prepared from the components in percentage by weight: 40 to 50 percent of Fe, 30 to 40 percent of Cu, 10 to 20 percent of Sn, 5 to 10 percent of Co,2 to 6 percent of Ni and Cr, 2 to 6 percent of Fe3O4, and 1 to 5 percent of C (graphite). The iron-based bonding agent has a good holding force on diamond particles, and the white mark phenomenon onthe mist side is basically disappeared. According to a grinding wheel body produced by the invention, the strength, the hardness, the stability and the deformability can meet the requirement of a glass processing process, and the wear resistance and the service life of the grinding wheel are effectively improved.

Description

technical field [0001] The invention relates to a diamond grinding wheel used in glass processing, in particular to a diamond grinding wheel and a manufacturing process thereof. Background technique [0002] The diamond grinding wheel used in glass processing mainly includes metal bond, organic bond, ceramic bond and composite bond according to the type of bond. The specific performance of diamond and bond together with strict production process constitute the performance of diamond grinding wheel. [0003] Metal bond diamond grinding wheel is composed of three parts: substrate, abrasive layer and transition layer. The main function of the substrate is to carry the abrasive layer, the transition layer and facilitate the installation and use of the grinding wheel. The transition layer, also known as the structural layer, is mainly used to protect the abrasive layer and enhance the bond strength between the abrasive layer and the substrate. Abrasive layer, also known as dia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/10B24D3/34B24D18/00C22C30/02C22C30/04C22C38/42C22C38/00C22C38/52C22C26/00B22F5/00
CPCB22F5/00B22F2005/001B24D3/10B24D3/342B24D18/0009C22C26/00C22C30/02C22C30/04C22C38/008C22C38/42C22C38/52
Inventor 范金山
Owner 江苏金港钻石工具有限公司
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