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A cleaning method for cemented carbide matrix used in superhard composite materials

A cemented carbide substrate and composite material technology, applied in the direction of metal material coating process, etc., can solve the problems of insufficient surface cleanliness, weak activity, affecting the bonding strength of superhard materials and cemented carbide substrates, etc., to achieve high cleanliness degree of activity, increase in activity, and eliminate the effect of peeling

Active Publication Date: 2021-12-10
ZHONGNAN DIAMOND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the cemented carbide substrate processed in the prior art is not clean enough and the activity is not strong, which affects the improvement of the bonding strength between the superhard material and the cemented carbide substrate.

Method used

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  • A cleaning method for cemented carbide matrix used in superhard composite materials
  • A cleaning method for cemented carbide matrix used in superhard composite materials
  • A cleaning method for cemented carbide matrix used in superhard composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 YG12X cemented carbide substrate surface cleaning treatment

[0043] 1) Alkalinization treatment: immerse the cemented carbide substrate in a low-alkali solution and boil for 2 minutes, wash it with deionized water until it is neutral, then immerse it in a high-alkali solution for ultrasonic vibration cleaning for 15 minutes, then take out the cemented carbide substrate and wash it with ion Rinse with water to neutral;

[0044] In this embodiment, the weak base solution is formed by mixing deionized water and sodium hydroxide in a mass ratio of 1:0.1; the strong base solution is formed by KOH, K 3 Fe(CN) 6 and H 2 O is mixed with a mass ratio of 1:0.8:8, the sodium hydroxide, KOH and K 3 Fe(CN) 6 It is analytically pure grade; the cleaning power of the ultrasonic vibration is 40W;

[0045] 2) Acidizing treatment: immerse the cemented carbide substrate in dilute sulfuric acid solution for ultrasonic vibration cleaning for 2 minutes, wash with deionized...

Embodiment 2

[0059] Example 2 Surface cleaning treatment of YG12X cemented carbide substrate

[0060] 1) Alkalinization treatment: immerse the cemented carbide substrate in a low-alkali solution and boil for 3.5 minutes, wash it with deionized water until it is neutral, then immerse it in a high-alkali solution for ultrasonic vibration cleaning for 15-20 minutes, and then wash the cemented carbide substrate Take out and rinse with ionized water until neutral;

[0061] In this embodiment, the low-alkali solution is formed by mixing deionized water and sodium hydroxide at a mass ratio of 1:0.15;

[0062] The high alkali solution is composed of KOH, K 3 Fe(CN) 6 and H 2 O is mixed with a mass ratio of 1:1:10;

[0063] The sodium hydroxide, KOH and K 3 Fe(CN) 6 For analytically pure grade; the cleaning power of the ultrasonic vibration is 50W;

[0064] 2) Acidification treatment: immerse the cemented carbide substrate in a dilute sulfuric acid solution for 3.5 min with ultrasonic vibra...

Embodiment 3

[0081] Example 3 Surface cleaning treatment of YG13X cemented carbide substrate

[0082] 1) Alkalinization treatment: immerse the cemented carbide substrate in a low-alkali solution and boil for 5 minutes, wash it with deionized water until it is neutral, then immerse it in a high-alkaline solution for ultrasonic vibration cleaning for 20 minutes, then take out the cemented carbide substrate and wash it with ion Rinse with water to neutral;

[0083] The low alkali solution is formed by mixing deionized water and sodium hydroxide in a mass ratio of 1:0.2; the high alkali solution is composed of KOH, K 3 Fe(CN) 6 and H 2 O is mixed with a mass ratio of 1:1.2:12, the sodium hydroxide, KOH and K 3 Fe(CN) 6 It is analytically pure grade; the cleaning power of the ultrasonic vibration is 60W;

[0084] 2) Acidification treatment: immerse the cemented carbide substrate in dilute sulfuric acid solution for 5 minutes, wash with deionized water until neutral, then immerse in dilute...

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Abstract

The invention discloses a method for cleaning a cemented carbide substrate for superhard composite materials. The cleaning process includes: 1) alkalization treatment; 2) acidification treatment; 3) activation treatment; 4) high vacuum purification treatment; Bombardment purification. This method can effectively remove the adsorbed impurities on the surface of the cemented carbide substrate, make it have a high degree of cleanliness, increase the surface activity of the cemented carbide substrate and its outward bonding reaction ability, and improve the quality of the superhard material and the cemented carbide substrate. The bonding strength between them avoids the occurrence of shedding and damage of superhard composite materials.

Description

technical field [0001] The invention belongs to the field of superhard materials and cemented carbide composite materials, and in particular relates to a method for cleaning a cemented carbide matrix used in superhard composite materials. Background technique [0002] Superhard composite materials are sintered by superhard materials and cemented carbide substrates under high temperature and high pressure conditions. Because it has the characteristics of high hardness and good wear resistance of superhard materials, it also has the impact resistance of cemented carbide. Strong and good weldability, it is an excellent composite material, which is widely used in machining tools, drilling teeth for petroleum / geological drilling, wire drawing dies, etc. [0003] In ultra-high pressure and high temperature sintering of super-hard composite materials, the sintering quality of super-hard composite materials will be directly affected by the surface cleanliness of the cemented carbide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/14C23G1/02C23C22/73C23G5/00C22F1/02
CPCC23G1/14C23G1/02C23C22/73C23G5/00C22F1/02
Inventor 卢灿华张涛包玉合宋子衡
Owner ZHONGNAN DIAMOND CO LTD
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