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Silicon steel sheet welding active agent and application method thereof

A technology of silicon steel sheets and active agents, applied in welding medium, welding equipment, welding equipment, etc., can solve the problems of easy cracks, small weld penetration, low welding efficiency, etc., to increase welding penetration and weld shape Good, easy-to-clean results

Inactive Publication Date: 2019-01-04
江阴市高拓精密模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no silicon steel sheet welding activator on the market, resulting in small weld penetration when welding silicon steel sheets, cracks are prone to occur after welding, and welding efficiency is low

Method used

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  • Silicon steel sheet welding active agent and application method thereof
  • Silicon steel sheet welding active agent and application method thereof

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Effect test

preparation example Construction

[0026] figure 2 For the preparation process of the active auxiliary agent for silicon steel sheets of the present invention, firstly, the purchased raw materials are powdered according to the formula ratio given by the present invention, then the powder is mixed with a ball milling process and the powder particles are refined, and then the powder is screened with a sieve. to filter.

[0027] Adopting the silicon steel sheet welding active auxiliary agent of the present invention to carry out welding comprises the following steps:

[0028] (1) Prepare the silicon steel sheet welding sample; the size of the silicon steel sheet welding sample is 20cm in outer diameter and 18cm in inner diameter;

[0029] (2) Carry out derusting treatment to the prepared silicon steel sheet welding sample, at first the silicon steel sheet surface is polished with a wire brush, and then the silicon steel sheet surface is polished smooth with sandpaper;

[0030] (3) Coating the silicon steel shee...

Embodiment 1

[0034] Step 1: Prepare a silicon steel sheet welding sample, the size of which is 20cm in outer diameter and 18cm in inner diameter.

[0035] Step 2: Derusting the prepared silicon steel sheet welding sample, firstly grinding the surface of the silicon steel sheet with a wire brush, and then polishing the surface of the silicon steel sheet smooth with sandpaper.

[0036] Step 3, welding and assembling the polished silicon steel sheet welding sample. Apply silicon steel sheet welding activator on the surface of the welding part (the actual composition ratio is NaF: 10%; Fe 2 o 3 : 40%; MnO 2 : 30%; SiO 2 and TiO 2 : balance), the thickness of the active agent coating layer is 0.2-1.0mm.

[0037] Step 4. The silicon steel sheet welding sample is welded by argon tungsten arc welding, and the tip of the tungsten electrode of the welding torch is placed directly above the part to be welded at a distance of 1.5 to 2.5 mm from the coating layer of the active agent. The welding ...

Embodiment 2

[0040] Step 1: Prepare a silicon steel sheet welding sample, the size of which is 20cm in outer diameter and 18cm in inner diameter.

[0041] Step 2: Derusting the prepared silicon steel sheet welding sample, firstly grinding the surface of the silicon steel sheet with a wire brush, and then polishing the surface of the silicon steel sheet smooth with sandpaper.

[0042] Step 3, welding and assembling the polished silicon steel sheet welding sample. Apply silicon steel sheet welding activator on the surface of the welding part (the actual composition ratio is NaF: 20%; Fe 2 o 3 : 30%; MnO 2 : 30%; SiO 2 and TiO2 : balance), the thickness of the active agent coating layer is 0.2-1.0mm.

[0043] Step 4: The silicon steel sheet welding sample is welded by argon tungsten arc welding, and the tip of the tungsten electrode of the welding torch is placed directly above the part to be welded, 1.5-2.5 mm away from the coating layer of the active agent. The welding process paramete...

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Abstract

The invention discloses a silicon steel sheet welding active agent and an application method thereof. The silicon steel sheet welding active agent and the application method thereof are suitable for welding of soft magnetic material silicon steel sheets. The silicon steel sheet welding active agent is characterized in that the active agent is composed of NaF, Fe2O3, MnO2, SiO2 and TiO2; the mass content of NaF ranges from 5% to 10%; the mass content of Fe2O3 ranges from 30% to 40%; the mass content of MnO2 ranges from 20% to 30%; and the balance is SiO2 and TiO2. The application method of theactive agent comprises the steps that active agent burdening is carried out according to the weight ratio, after being fully and evenly mixed, raw materials are mixed with an organic solution, and a mixture is stirred into paste; a welding sample is carefully ground through a stainless steel wire brush till bright metal is exposed; and the surface of a welding workpiece is coated with the preparedpasty mixture so as to cover the original metal luster. By means of the silicon steel sheet welding active agent, welding penetration of the silicon steel sheet can be increased, a welding seam is attractive and level, and the cracking problem during silicon steel sheet welding can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of welding technology, and in particular relates to an active agent used for welding soft magnetic material silicon steel sheets and a using method thereof. Background technique [0002] Silicon steel sheet is a ferrosilicon soft magnetic alloy with extremely low carbon content, generally containing 0.5-4.5% silicon. Adding silicon can increase the resistivity and maximum permeability of iron, reduce coercive force, core loss (iron loss) and magnetic aging. It is mainly used to make iron cores of various transformers, motors and generators. Since the silicon steel sheet is composed of very thin pieces of silicon steel, under ordinary TIG welding, cracks are easy to occur during handling and use, so A-TIG welding is used for welding. [0003] The effects of ordinary tungsten argon arc welding (TIG welding) and A-TIG welding on the surface tension of liquid metal in the welding pool and the flow direction of...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K9/02B23K9/235
CPCB23K9/02B23K9/235B23K35/362
Inventor 初雅杰贾平李晓泉贺显聪封海鹏徐丽霞
Owner 江阴市高拓精密模具有限公司
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