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Copper base diamond saw blade

A diamond-based technology, applied in the field of wear-resistant copper-based diamond saw blades, can solve the problems of low sintering temperature, high sintering temperature, poor wear resistance, etc., and achieve the effect of increasing the service life

Inactive Publication Date: 2011-09-28
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cobalt-based diamond saw blades have the advantages of high hardness and good wear resistance, but are expensive and have a high sintering temperature. The development trend is to replace cobalt-based with low-cobalt or non-cobalt-based
The advantages of iron-based diamond saw blades are low price and simple production process, but poor toughness and self-sharpening
The sintering temperature of copper-based diamond saw blade is low, the price is low, and the toughness is good, but the wear resistance is poor. The saw blade is easy to wear during the cutting process, which seriously affects the life of the diamond saw blade.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Pure copper powder (Cu): 36%, iron powder (Fe): 17%, nickel powder (Ni) 8%, tungsten carbide (WC): 4%, tin powder (Sn): 7%, bronze powder (Cu) -10Sn): 28%, after mixing uniformly, add 16% abrasive grade diamond concentration and 2% nanometer diamond concentration successively to mix uniformly, and finally add liquid paraffin to mix. Put the mixed molding material and the steel matrix of the saw blade into a cold press mold to form a cold press. After demolding, it is placed in a bell furnace and sintered in a hydrogen reducing atmosphere. The sintering temperature is 880°C, and the temperature is maintained for 60 minutes. Start to pressurize when the pressure is 40KN, keep the pressure for 5min. After cooling down, the diamond saw blade is obtained. After the saw blade is sharpened, the Fujian 603 granite plate is used as the sawing object for solid cutting. The plate specification: length 660mm, thickness 20mm. Repeat dry cutting for each saw blade 6 times, and record ...

Embodiment 2

[0021] Pure copper powder (Cu): 37.9%, iron powder (Fe): 20%, nickel powder (Ni): 10%, tungsten carbide (WC): 2%, tin powder (Sn): 6.1%, bronze powder (Cu -10Sn): 24%. The concentration of abrasive grade diamond is 18%. The concentration of nanometer diamond is 5%. The preparation process is the same as the above, and the calculation method of the service life of the saw blade is the same as the above.

[0022] It is calculated that the service life of the saw blade is 128.9m. Compared with the 105m service life of similar products on the market, the service life of the saw blade is increased by 22.8%.

Embodiment 3

[0024] Pure copper powder (Cu): 40%, iron powder (Fe): 22%, nickel powder (Ni): 12%, tungsten carbide (WC) 1%, tin powder (Sn): 4%, bronze powder (Cu- 10Sn): 21%. The concentration of abrasive grade diamond is 20%, and the concentration of nanometer diamond is 10%. The preparation process is the same as the above, and the calculation method of the service life of the saw blade is the same as the above.

[0025] It is calculated that the service life of the saw blade is 121.7m. Compared with the 105m service life of similar products on the market, the service life of the saw blade is increased by 15.9%.

[0026] After testing, the copper-based diamond saw blade prepared according to the above formula has good wear resistance, and achieves the purpose of the invention.

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Abstract

The invention relates to a copper base diamond saw blade, which comprises a cutter head and a steel base body and is characterized in that the cutter head is made by mixing and firing metal powder, abrasive grade diamond and nano grade diamond; and the metal powder comprises pure copper powder, iron powder, nickel powder, tungsten carbide, tin powder and bronze powder. The preparation method comprises the steps of: uniformly mixing the metal powder according to a proportion; sequentially adding the abrasive grade diamond and the nano grade diamond for mixing; finally adding liquid olefin; packing the mixed formed material into a cold pressing mould to form; and sintering to prepare the diamond saw blade. Compared with the prior art, the diamond saw blade has the advantage that the abrasive grade diamond and the nano grade diamond are simultaneously added in the saw blade for achieving the purpose of organically combining the cutting function of the abrasive grade diamond with the friction-reducing abrasion resistant function of the nano grade diamond, therefore, the copper base diamond saw blade has effective sawing performance and better abrasion resistant performance. Compared with a similar saw blade, the copper base diamond saw blade has obviously enhanced service life by a test.

Description

Technical field [0001] The invention relates to a diamond saw blade, in particular to a wear-resistant copper-based diamond saw blade, which is suitable for processing granite and marble. Background technique [0002] The most common tool for sawing stone is the diamond saw blade, and its performance is the key to determining the cost and efficiency of stone processing. The diamond saw blade is composed of three parts: diamond, bond, and matrix. Diamond saw blades are classified into cobalt-based diamond saw blades, iron-based diamond saw blades and copper-based diamond saw blades. According to different cutting objects, products with different bonding agents are selected. Cobalt-based diamond saw blades have the advantages of high hardness and good wear resistance, but they are expensive and high in sintering temperature. Its development trend is to replace cobalt-based with low-cobalt or non-cobalt-based. Iron-based diamond saw blades have the advantages of low price and sim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D1/04
Inventor 毕晓勤王洁朱建业
Owner HENAN UNIVERSITY OF TECHNOLOGY
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