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Manufacturing method for heavy-load grinding wheel

A heavy-duty grinding wheel, mass fraction technology, used in manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problems of weak impact resistance, soft tissue, and time consumption, and achieve extended service life, interface Strong bonding force, reducing the effect of cutting heat

Inactive Publication Date: 2014-02-19
CHANGSHU JULI GRINDING WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heavy-duty grinding wheel in the prior art belongs to the conventional resin grinding wheel, which has a soft structure, poor toughness, and weak impact resistance
Grinding under conventional process conditions, when the heavy-duty grinding wheel touches the steel billet, it is easy to cause edge bursting or even a bursting accident because it cannot withstand the impact force
The edge burst of the heavy-duty grinding wheel forms a gap, which constitutes a safety hazard and cannot be used for grinding. Replacing the heavy-duty grinding wheel will not only consume man-hours, but also increase the production cost of the user
The heavy-duty grinding wheel is relatively large in size, and the risk of impact and bursting of the disc during high-speed rotation is greater, and the loss is more serious, so precautions must be taken

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method for a heavy-duty grinding wheel, comprising the steps of:

[0019] 1) Take 20 parts by mass of sintered corundum, 37 parts by mass of zirconium corundum, and 2 parts by mass of brown corundum and mix them in a mixer for 1 hour, then add 0.1 parts by mass of isopropyl titanate, 9 parts by mass of light calcium carbonate micropowder, 0.5 parts by mass of tetrabutyl titanate, 0.6 parts by mass of isopropyl trihydroxyacyl titanate, 1 part by mass of cryolite powder, 5 parts by mass of phenolic resin powder, 3 parts by mass of elastic polyvinyl chloride powder, 7 parts by mass of impregnated chopped chopped Glass fiber, continue mixing for 1 hour to obtain molding material;

[0020] 2) Put the molding material into the cavity of the mold and spread it evenly, and apply a pressure of 16Mpa to pre-press the initial molding;

[0021] 3) Put the preformed billet into the drying tunnel and preheat to 115°C for 1 hour;

[0022] 4) Put the preheated blank int...

Embodiment 2

[0025] A preparation method for a heavy-duty grinding wheel, comprising the steps of:

[0026] 1) Take 25 parts by mass of sintered corundum, 40 parts by mass of zirconium corundum, and 4 parts by mass of brown corundum and mix them in a mixer for 2 hours, then add 0.5 parts by mass of isopropyl titanate, 11 parts by mass of light calcium carbonate micropowder, 0.8 parts by mass of tetrabutyl titanate, 0.9 parts by mass of isopropyl trihydroxyacyl titanate, 2 parts by mass of cryolite powder, 7 parts by mass of phenolic resin powder, 4 parts by mass of elastic polyvinyl chloride powder, 9 parts by mass of impregnated chopped chopped Glass fiber, continue mixing for 2 hours to obtain molding material;

[0027] 2) Put the molding material into the cavity of the mold and spread it evenly, and apply a pressure of 18Mpa to pre-press the initial molding;

[0028] 3) Put the preformed billet into the drying tunnel and preheat to 120°C for 2 hours;

[0029] 4) Put the preheated blan...

Embodiment 3

[0032] A preparation method for a heavy-duty grinding wheel, comprising the steps of:

[0033] 1) Take 23 parts by mass of sintered corundum, 38 parts by mass of zirconium corundum, and 3 parts by mass of brown corundum and mix them in a mixer for 1.5 hours, then add 0.4 parts by mass of isopropyl titanate, 10 parts by mass of light calcium carbonate micropowder, 0.7 parts by mass of tetrabutyl titanate, 0.8 parts by mass of isopropyl trihydroxyacyl titanate, 1.4 parts by mass of cryolite powder, 6 parts by mass of phenolic resin powder, 3.5 parts by mass of elastic polyvinyl chloride powder, 8 parts by mass of impregnated chopped chopped Glass fibers, continue to mix for 1.5 hours to obtain molding materials;

[0034] 2) Put the molding material into the cavity of the mold and spread it evenly, and apply a pressure of 17Mpa to pre-press the initial molding;

[0035] 3) Put the preformed billet into the drying tunnel and preheat to 118°C for 1.5 hours;

[0036] 4) Put the pr...

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PUM

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Abstract

The invention discloses a manufacturing method for a heavy-load grinding wheel. The method includes the following steps that 1) raw materials are taken and mixed to obtain molding materials; 2) the molding materials are put in an inner cavity of a die and uniformly spread, and prepressing pre-profiling is carried out; 3) pre-profiling blanks are put in a drying tunnel to be preheated for 1-2 hours to reach the temperature of 115-120 DEG C; 4) preheated pre-profiling blanks are placed in the die to continue to be heated to the temperature of 195 DEG C-200 DEG C, and the grinding wheel is formed through hot pressing; 5) the hot press molding grinding wheel is placed in a drying oven heated to the temperature of 200 DEG C to be solidified for 12 hours and then naturally cooled to the room temperature to be taken out, and a finished product is manufactured. According to the method, toughness of the heavy-load grinding wheel can be improved, cutting heat is reduced, and the cutting ratio is increased.

Description

technical field [0001] The invention relates to a method for preparing a heavy-duty grinding wheel. Background technique [0002] Before billets are used for rolling profiles, they are usually surface ground with heavy-duty grinding wheels to improve the quality of profile rolling. The heavy-duty grinding wheel in the prior art belongs to the conventional resin grinding wheel, which has a soft structure, poor toughness and weak impact resistance. Grinding under conventional process conditions, when the heavy-duty grinding wheel touches the steel billet, it is easy to cause edge bursting or even bursting accidents because it cannot withstand the impact force. The edge burst of the heavy-duty grinding wheel forms a gap, which constitutes a safety hazard and cannot be used for grinding. Replacing the heavy-duty grinding wheel not only consumes man-hours, but also increases the production cost of the user. The heavy-duty grinding wheel is relatively large in size, and the risk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00
Inventor 邵国良
Owner CHANGSHU JULI GRINDING WHEEL
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