Method for manufacturing electric plating diamond burr

A technology for electroplating diamond and manufacturing method, which is applied to electrolytic coatings, dental tools, coatings, etc., can solve the problems of easy falling off of diamond particles, peeling off of the coating layer, and fracture of the needle base body, so as to reduce the probability of breakage and enhance the coating layer. Bonding force, the effect of preventing breakage accidents

Inactive Publication Date: 2009-05-06
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an electroplated diamond bur that can solve the problems that the diamond particles are easy to fall off duri

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0038] The preparation process of the composite coating in step three of the present invention is: preparing plating solution→priming plating→sanding plating→thickening plating. The composition of the electroplating solution is NiSO 4 ·6H 2 O 250~350g·L -1 , NiCl 2 ·6H 2 O 35~50g·L -1 , H 3 BO 3 30-45g·L -1 , Sodium lauryl sulfate 0.05~0.1g·L -1 .

[0039] The primer plating in step 3 of the present invention includes impact plating and empty plating. The electroplating process parameters of impact nickel plating: 2-4A / dm 2 , Time 5-15min; the electroplating process parameters of empty nickel plating: 0.5-3A / dm 2 , Time 10-30min.

[0040] In the preparation of the diamond composite coating in step 3 of the present invention, an annular hollow electrolytic nickel column or four symmetrically distributed electrolytic nickel plates are used as anodes.

[0041] The sand plating in step 3 of the present invention is to add a sand bath to the above-mentioned plating solution. The sand b...

Example Embodiment

[0044] Specific embodiment 1: Research on the heat treatment process after nickel plating on the surface of nickel-titanium alloy

[0045] The nickel-titanium alloy bur substrate is used as the research object, and the composition is Ti-50.8 at.% Ni. Before electroplating, the nickel-titanium alloy sheet is pretreated.

[0046] (1) Pretreatment process

[0047] a. Insulate the non-plated part of the nickel-titanium alloy bur base with a thermoplastic tube.

[0048] b. Put the nickel-titanium alloy bur base into the acetone solution, ultrasonically clean for 15 minutes, and then rinse with distilled water.

[0049] c. When containing NaOH 50g / l, Na 2 CO 3 40g / l, Na 3 PO 4 30g / l and Na 2 SiO 3 Carry out alkaline washing and degreasing in 5g / l lye, keep the temperature at 80℃ for 20min, then wash under ultrasonic condition for 10min, and rinse with distilled water.

[0050] d. In HF and HNO 3 Mixed solution (volume ratio HF (40wt.%): HNO 3 (65wt.%)=1:3) etched to red smoke, and then ...

Example Embodiment

[0059] Specific embodiment two: the electroplated nickel-titanium alloy bur base is vacuum packaged and then heat treated, the treatment temperature is 850°C, the temperature is kept for 60 minutes, and then it is cooled in the furnace. Others are the same as the first embodiment.

[0060] After the heat treatment, the section of the nickel-titanium alloy bur substrate is polished with 1000# sandpaper, and the interface between the nickel-plated layer on the section and the nickel-titanium alloy substrate is lined with Ti and Ni elements using an X-ray energy spectrum analyzer. Scan component analysis. The results show that the nickel-titanium alloy substrate can form a diffusion layer between the nickel-plated layer and the substrate during the heat treatment process, and the interface bonding strength is greatly improved.

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Abstract

The invention provides a method for manufacturing a plated diamond needle, which takes nickel-titanium alloy as a substrate of the needle, and comprises the following steps: firstly, the nickel-titanium alloy substrate of the needle is processed; secondly, the nickel-titanium alloy substrate of the needle and diamond particles are subjected to electroplating pre-treatment; thirdly, a composite diamond clad layer is coated on the head of the needle by means of direct-current electroplating; and fourthly, the diamond needle prepared is subjected to vacuum heat-treatment after electroplating. The method has the advantages that: firstly, the nickel-titanium alloy substrate of the needle has strong impact resistance, and the fracture probability of the substrate of the needle under the actuation of impulsive load is reduced, so that the fracture accident of the substrate of the needle can be effectively prevented; and secondly, due to adoption of the nickel-titanium alloy substrate of the needle and the heat-treatment technology after electroplating, a diffused layer is formed on an interface between the nickel-titanium alloy substrate of the needle and a metallic nickel clad layer, and metallic nickel in the clad layer and titanium in the nickel-titanium alloy substrate of the needle form intermetallic compounds, so that the bonding force of the clad layer is greatly reinforced, and the service life of the diamond needle is further improved.

Description

(1) Technical field [0001] The invention relates to a manufacturing method of a medical dental instrument, in particular to a manufacturing method of an electroplated diamond bur for grinding teeth. (2) Background technology [0002] Diamond burs are important instruments for tooth preparation in dental restorations, usually consisting of a metal base and a diamond-embedded grinding layer. The preparation methods of diamond bur mainly include electroplating method and powder metallurgy method. Among them, there is a strong chemical bonding force between the diamond and the metal coating in the sintered diamond bur prepared by powder metallurgy, so it has good cutting performance and high durability. However, due to the high temperature of the preparation process, certain thermal damage will be generated on the diamond, which will reduce the strength of the diamond. However, the production process of the diamond bur prepared by the electroplating method is carried out under...

Claims

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Application Information

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IPC IPC(8): C25D15/00B23P5/00A61C3/00
Inventor 郑玉峰周惠敏郑卫李莉
Owner HARBIN ENG UNIV
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