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Method of manufacturing electroplating cubic boron nitride tool by using surface activation treatment technology

A technology for surface activation treatment and boron nitride tools, applied in the field of preparation of cubic boron nitride tools, can solve the problems of reducing the service life of CBN tools, losing waste, sticking together, and forming blocks, etc., to improve processing efficiency and service life, the effect of enhancing the bonding force

Inactive Publication Date: 2006-06-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When CBN particles are subjected to cutting force during work, they tend to loosen, rotate, and fall off in the coating, which will greatly reduce the service life of CBN tools
According to statistics, the utilization rate of CBN is only 60% to 70% in impregnated tools, which account for the majority of CBN tools, and a large amount of expensive CBN falls off during processing and is lost in waste
[0006] Although the current CBN plating technology can realize the metallization of the CBN surface, such as CBN titanium plating, CBN nickel plating, etc., the plated CBN is mostly used in the manufacture of sintered tools and cannot be applied to electroplated products, because plating The surface of CBN is metallized and has good electrical conductivity. If electroplating of CBN tools is carried out, in the process of burying sand, the plated CBN, the steel body and the coating will form the cathode together, and many CBN particles will stick together and form a block. Phenomenon, unable to prepare qualified electroplating CBN tools

Method used

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  • Method of manufacturing electroplating cubic boron nitride tool by using surface activation treatment technology
  • Method of manufacturing electroplating cubic boron nitride tool by using surface activation treatment technology
  • Method of manufacturing electroplating cubic boron nitride tool by using surface activation treatment technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) CBN pretreatment process

[0043] a) Magnetic separation treatment: use a magnet to remove CBN particles with high magnetic induction, and the particle size range of CBN particles is 40 / 45~230 / 270.

[0044] b) Purification and roughening treatment: Soak 20g of CBN particles in 300mL of 10% HCl solution, boil for 30min under constant stirring, rinse with distilled water until neutral after cooling.

[0045] c) Sensitization treatment: the SnCl of 6g 2 2H 2 O was dissolved in 20mL of hydrochloric acid with a concentration of 1.19g / L, and after it was completely dissolved, it was diluted to 500mL with distilled water, and 0.5g of tin particles were added to the sensitization solution for later use. At 25°C, the purified and roughened CBN was immersed in 100 mL of sensitization solution and stirred for 2 min, and then the sensitized CBN particles were washed with distilled water.

[0046] d) Activation treatment: 0.1g PdCl 2Dissolve in 1-2mL hydrochloric acid with a...

Embodiment 2

[0069] Basically the same as Example 1, the difference is

[0070] Is the use of groups into

[0071] SnCl 2 2H 2 O 20g / L

[0072] The concentration is 1.19g / L HCl 40mL / L

[0073] Tin particles 0.3g / L

[0074] CBN soaked in the sensitizing solution at 20°C and stirred for 5 minutes, washed the sensitized CBN particles with distilled water, and then, at 20°C, soaked the CBN in the composition of

[0075] PdCl 2 0.2g / L

[0076] The concentration is 1.19g / L HCl 4- / L

[0077] In the activation solution, stir for 0.5 minutes, wash the activated CBN particles with distilled water, and obtain CBN particles with dispersed palladium particles deposited on the surface

[0078] Finally, soak the CBN in the electroplating solution for sand electroplating.

Embodiment 3

[0080] Basically the same as Example 1, the difference is

[0081] SnCl 2 2H 2 O 40g / L

[0082] The concentration is 1.19g / L HCl 60mL / L

[0083] Tin particles 1.0g / L

[0084] CBN soaked in the sensitizing solution at 30°C and stirred for 10 minutes, washed the sensitized CBN particles with distilled water, and then, at 30°C, soaked the CBN in the composition of

[0085] PdCl 2 0.5g / L

[0086] The concentration is 1.19g / L HCl 10mL / L

[0087] The activated solution was stirred for 1 minute, and the activated CBN particles were washed with distilled water to obtain CBN with dispersed palladium particles deposited on the surface.

[0088] Finally, soak the CBN in the electroplating solution for sand electroplating.

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Abstract

The invention discloses an electroplating cubic boron nitride tool manufacturing method of adopting surface activation processing. The method includes cubic boron nitride pretreatment, tool matrix pretreatment, electroplating solution preparation, and CBN tool electroplating; CBN pretreatment adopts sensitizing and activating treatment; finally dipping CBN in electroplating solution to electroplate. The advantages of the invention are improving CBN grain surface activation in CBN pretreatment, forming dispersal palladium particle at CBN surface, increasing binding force between CBN and plate, processing efficiency and using life, and economizing CBN.

Description

technical field [0001] The invention relates to a preparation method of a cubic boron nitride (CBN) tool, in particular to a method for manufacturing an electroplated cubic boron nitride tool by using surface activation treatment technology. Background technique [0002] Electroplated CBN tools refer to a type of CBN tools made by solidifying CBN on a tool substrate with a specific shape by metal electrodeposition. Electroplated CBN tools are widely used in the field of ferrous metal processing, which requires electroplated CBN tools to have high processing efficiency and as long as possible service life. For electroplated CBN tools, nickel or nickel-cobalt alloys are mostly used as the coating metal at present, which mainly play the role of support and bonding agent, and the cutting effect is completed by CBN abrasive grains. Therefore, the bonding force between the plated metal and the abrasive grains must be good, so as to avoid the prematu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/54
Inventor 陈思夫于爱兵王凤岐张连洪孔祥中
Owner TIANJIN UNIV
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