Brazing auxiliary agent for tungsten steel plane welding and welding method thereof

A technology of plane welding and welding method, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems of poor weldability and easy seam retention of tungsten carbide, so as to improve welding efficiency and desoldering Less, avoid the effect of oxidation

Active Publication Date: 2018-01-19
湖北亚科微钻有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the existing tungsten carbide has poor weldability and two waste tungsten carbide base materials are easy to leave seams when welding

Method used

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  • Brazing auxiliary agent for tungsten steel plane welding and welding method thereof
  • Brazing auxiliary agent for tungsten steel plane welding and welding method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This embodiment provides a brazing additive for plane welding of tungsten steel, which includes the following components in parts by weight: KF: 48 parts, B 2 O 3 :20 parts, CoCl 2 : 10 parts, composite fluoroborate: 8 parts, composite borate: 10 parts, surfactant: 6 parts, water: 63 parts. Among them, the composite fluoroborate is a mixture of potassium fluoroborate and ammonium fluoroborate at a mass ratio of 2:1, the composite borate is a mixture of sodium borate and potassium borate at a mass ratio of 1:1, and the surfactant is a perfluoroalkane Base quaternary ammonium salt. Put the above-mentioned components into a crucible according to the proportion and mix them, boil them at a temperature of 150-180°C for 20 minutes, remove the water, and form a paste.

[0028] The brazing aid prepared in this embodiment is uniformly mixed, without delamination, and no visible inclusions, and the brazing aid has good spreadability on the solid silver solder sheet.

[0029] The braz...

Embodiment 2

[0037] This embodiment provides a brazing additive for plane welding of tungsten steel, which includes the following components in parts by weight: KF: 45 parts, B 2 O 3 :15 parts, CoCl 2 : 12 parts, composite fluoroborate: 10 parts, composite borate: 12 parts, surfactant: 9 parts, water: 52 parts. Among them, the composite fluoroborate is a mixture of potassium fluoroborate and ammonium fluoroborate at a mass ratio of 3:1, the composite borate is a mixture of sodium borate and potassium borate at a mass ratio of 1:1, and the surfactant is a perfluoroalkane 基amine. Put the above-mentioned components into a crucible according to the proportions and mix them, and boil them at a temperature of 150-180°C for 15 minutes to remove the water and form a paste.

[0038] The brazing aid prepared in this embodiment is uniformly mixed, without delamination, and no visible inclusions, and the brazing aid has good spreadability on the solid silver solder sheet.

[0039] The method of welding two...

Embodiment 3

[0041] This embodiment provides a brazing aid for plane welding of tungsten steel, including the following components in parts by weight: KF: 50 parts, B 2 O 3 : 23 parts, CoCl 2 : 12 parts, composite fluoroborate: 8 parts, composite borate: 7 parts, surfactant: 4 parts, water: 68 parts. Among them, the composite fluoroborate is a mixture of potassium fluoroborate and ammonium fluoroborate at a mass ratio of 2:1, the composite borate is a mixture of sodium borate and potassium borate at a mass ratio of 1:1, and the surfactant is a perfluoroalkane 基amine. Put the above-mentioned components into a crucible according to the proportion and mix them, and boil them at a temperature of 150-180°C for 23 minutes to remove the water and form a paste.

[0042] The brazing aid prepared in this embodiment is uniformly mixed, without delamination, and no visible inclusions, and the brazing aid has good spreadability on the solid silver solder sheet.

[0043] The method of welding two tungsten st...

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Abstract

The invention provides a brazing auxiliary agent for tungsten steel plane welding. The brazing auxiliary agent comprises the following components in parts by mass: 45-50 parts of KF, 15-23 parts of B2O3, 10-12 parts of CoCl2, 8-10 parts of compound fluoborate, 7-12 parts of compound borate, 4-9 parts of a surfactant and 52-68 parts of water. The brazing auxiliary agent can prevent a tungsten steelrod from being oxidized in a welding process effectively, and meanwhile, an instantaneous catalytically molten solid silver soldering lug and the tungsten steel rod are welded under a special temperature condition, so that no weld joints are left, and the strength and physical properties of the welding points are consistent to those of the whole tungsten steel rod.

Description

Technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a brazing flux for plane welding of tungsten steel and a welding method thereof. Background technique [0002] The micro drills and milling cutters used in the production of PCB (integrated circuit) boards all need to import raw materials, which are expensive. The price of an imported tungsten carbide bar with a specification of (Φ3.25mm×38.5mm) has risen from 1.8 yuan to The price of 3.3 yuan is still rising, and the price of finished products is declining. Milling cutters and drills used by manufacturers cannot be recycled and used directly, and they need to be refined. If you continue to use traditional production techniques, profit margins will become smaller and smaller. In order to make full use of resources, reduce product costs, improve economic efficiency, and build a conservation-minded society, in recent years, some units on the market have used recyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/363B23K1/002
Inventor 黎国甫郑四来
Owner 湖北亚科微钻有限公司
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