Welding process of cubic boron nitride soldering materials

A boron nitride brazing and welding technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of low product service life, poor machining performance, and difficulty in realizing CBN connection. The effect of increasing the reactivity

Inactive Publication Date: 2016-10-19
洛阳新巨能高热技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, CBN has low impact toughness and poor machinability. At the same time, CBN shows very stable electronic coordination, which is difficult to be cleaned by molten liquid metal. It is difficult for general welding materials to realize the connection between CBN and other metals, which limits its development. application
At present, most CBN products adopt sintering or electroplating process, and the CBN abrasive grains are only mechanically embedded in the bonding layer metal, so the service life of the product is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Cubic boron nitride brazing filler metal of the present invention and welding process comprise the following steps:

[0019] 1. Substrate cleaning: chemically treat 45# steel in an ultrasonic cleaning machine to remove surface oil.

[0020] 2. Ingredients: Ti is added to the Ag-Cu solder, mixed with CBN particles for ball milling, and the amount of CBN added depends on the product requirements. The particle size of the CBN particles is 250 μm; the Ag-Cu solder is eutectic active solder, the mass fraction of Ti is 8%, and the particle size is 180 μm.

[0021] 3. Ball milling: the mixture is ball milled in a planetary ball mill, a polyurethane ball mill tank, agate balls, and ball milled for 1 hour.

[0022] 4. Coating: Add brazing flux to the powdery mixture to make it uniform and viscous, and evenly coat it on the surface of 45# steel.

[0023] 5. High-temperature brazing: The steel substrate coated with brazing material is brazed in a vacuum furnace at a brazing temp...

Embodiment 2

[0025] Cubic boron nitride brazing filler metal of the present invention and welding process comprise the following steps:

[0026] 1. Substrate cleaning: chemically treat 45# steel in an ultrasonic cleaning machine to remove surface oil.

[0027] 2. Ingredients: Ti is added to the Ag-Cu solder, mixed with CBN particles for ball milling, and the amount of CBN added depends on the product requirements. The particle size of the CBN particles is 280 μm; the Ag-Cu solder is eutectic active solder, the mass fraction of Ti is 10%, and the particle size is 190 μm.

[0028] 3. Ball milling: the mixture is ball milled in a planetary ball mill, polyurethane ball mill tank, agate balls, and ball milled for 2 hours.

[0029] 4. Coating: Add brazing flux to the powdery mixture to make it uniform and viscous, and evenly coat it on the surface of 45# steel.

[0030] 5. High-temperature brazing: The steel substrate coated with brazing filler metal is brazed in a vacuum furnace at a brazing ...

Embodiment 3

[0032] Cubic boron nitride brazing filler metal of the present invention and welding process comprise the following steps:

[0033] 1. Substrate cleaning: chemically treat 45# steel in an ultrasonic cleaning machine to remove surface oil.

[0034] 2. Ingredients: Ti is added to the Ag-Cu solder, mixed with CBN particles for ball milling, and the amount of CBN added depends on the product requirements. The particle size of the CBN particles is 300 μm; the Ag-Cu solder is eutectic active solder, the mass fraction of Ti is 12%, and the particle size is 200 μm.

[0035] 3. Ball milling: the mixture is ball milled in a planetary ball mill, polyurethane ball mill tank, agate balls, and ball milled for 3 hours.

[0036] 4. Coating: Add brazing flux to the powdery mixture to make it uniform and viscous, and evenly coat it on the surface of 45# steel.

[0037] 5. High-temperature brazing: The steel substrate coated with brazing material is brazed in a vacuum furnace, the brazing temp...

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Abstract

The invention provides cubic boron nitride soldering materials and a process. The process includes taking silver and copper eutectic solder as the main body, adding a small amount of Ti as the active element, and uniformly mixing with CBN particles in a planetary ball mill, uniformly coating the mixed product on the surface of a steel substrate, and performing soldering and heating in a vacuum furnace to form a wear-resistant super-hard composite layer on the surface of the steel substrate. The soldering materials have good wetability to the substrate steel and can be uniformly distributed on the surface of the substrate steel to firmly solder the CBN to the steel surface.

Description

technical field [0001] The invention belongs to the field of superhard materials, and in particular relates to a cubic boron nitride brazing welding process and a welding process. Background technique [0002] Cubic boron nitride (CBN) is second only to diamond in hardness, has superior physical, chemical and mechanical properties, and is especially suitable for processing iron-based alloy materials, such as high-speed tool steel, bearing steel, stainless steel, heat-resistant steel and titanium alloys with high hardness Tough metal material. In recent years, as advanced manufacturing technology requires higher and higher processing precision of parts, new CBN products have gradually played an important role. [0003] However, CBN has low impact toughness and poor machinability. At the same time, CBN shows very stable electronic coordination, which is difficult to be cleaned by molten liquid metal. It is difficult for general welding materials to realize the connection betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/008B23K35/40B23K35/30B23K1/20B23K101/20
CPCB23K1/008B23K1/0008B23K1/206B23K35/025B23K35/3006B23K35/40
Inventor 丁超刘全泰
Owner 洛阳新巨能高热技术有限公司
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