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Low magnetic permeability stainless electrode and preparation method thereof

A low magnetic permeability, stainless steel technology, applied in the direction of welding equipment, welding media, manufacturing tools, etc., can solve the problems of increased use cost, no low magnetic permeability, etc., and achieve the effect of easy promotion and use

Active Publication Date: 2010-11-03
TIANJIN BRIDGE WELDING MATERIALS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic permeability in low magnetic environment requires no more than 1.2G / O e , so the existing E308-16 stainless steel electrode can no longer meet the requirements
[0003] The existing E310-16 stainless steel electrode (that is, ordinary A402 stainless steel electrode), its weld metal can meet the design requirements in terms of mechanical properties and low magnetic permeability, but the price of E310-16 stainless steel electrode is higher than that of E308-16 Type stainless steel electrodes are much higher, and the cost of use is greatly increased
[0004] After consulting the data, there is no E308-16 stainless steel electrode with low magnetic permeability in the domestic market at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0018] Embodiment 1-4 Preparation of low magnetic permeability stainless steel electrode

[0019] Table I

[0020] Skin ingredients

[0021] Take the components of the coating according to Table 1, mix them evenly, use potassium and sodium mixed with water glass as the binder, press-coat it on the H06Cr21Ni10 welding core on the hydraulic machine, grind out the clamping end and the arc starting end, and use The electrode drying furnace is dried step by step at a low temperature of 50-90°C for 2 hours, at a medium temperature of 90-150°C for 2 hours, and at a high temperature of 250-300°C for 2 hours to obtain the low magnetic permeability stainless steel electrode of the present invention.

experiment example 1-4

[0022] Experimental example 1-4 Performance test of the low magnetic permeability stainless steel electrode of the present invention.

[0023] The various index performances of the low magnetic permeability stainless steel welding rods prepared in Examples 1-4 were tested by industry conventional methods, and the results are shown in Tables 2, 3 and 4.

[0024] Table 2: Chemical Composition of Electrode Deposited Metal of Embodiment 1-4

[0025]

C

S

mn

P

Si

Cr

Ni

Mo

Implementation 1

0.05

0.010

0.82

0.032

0.85

18.11

9.11

0.09

Implementation 2

0.05

0.012

1.00

0.033

0.88

18.20

9.60

0.10

Implementation 3

0.04

0.011

1.12

0.030

0.83

18.37

10.01

0.11

Implementation 4

0.05

0.009

1.35

0.034

0.86

18.50

10.80

0.08

[0026] Table 3: Mechanical properties of electrode deposited metal of embodiment 1-4

[0027]

...

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PUM

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Abstract

The invention discloses a stainless steel welding electrode with low magnetic permeability and a preparation method thereof. The welding electrode of the invention is composed of an H06Cr21Ni10 welding core and a coating. The coating comprises components according to the following weight percentages: 45 percent to 53 percent of TiO2, 10 percent to 13 percent of CaCO3, 10 percent to 13 percent of CaF2, 0.6 percent to 1 percent of alkali powder , 5 percent to 7 percent of quartz, 2 percent to 3 percent of talc, 6 percent to 8 percent of chromium metal, 7.5 percent to 8.5 percent of manganese metal, 2.8 percent to 3.6 percent of metallic nickel and 1 percent to 2 percent of Cr2O3. The weld metal of the welding electrode of the invention has low magnetic permeability, meets the required mechanical properties and can be used for welding stainless steel structures of 1Cr18Ni9Ti and 0Cr18Ni9 with low magnetic permeability. The price of the welding electrode is considerably lower than that ofthe existing stainless steel welding electrode E310-16 with low magnetic permeability. The welding electrode of the invention has welding technological properties and mechanical properties of weld metal which are similar to the existing E308-16 stainless steel welding electrode, thereby being convenient for wide application.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a stainless steel electrode with low magnetic permeability of weld metal. Background technique [0002] The existing E308-16 stainless steel electrode (that is, the common A102 stainless steel electrode), when welding stainless steel structures of 1Cr18Ni9Ti and 0Cr18Ni9 that require low magnetic permeability, although its mechanical properties meet the requirements, it cannot guarantee that the weld metal has low magnetic properties. Conductivity. Its weld deposit metal permeability is generally 1.3G / O e , up to 1.6G / O e . However, the magnetic permeability in low magnetic environment requires no more than 1.2G / O e , so the existing E308-16 stainless steel electrode can no longer meet the requirements. [0003] The existing E310-16 stainless steel electrode (that is, ordinary A402 stainless steel electrode), its weld metal can meet the design requirements in terms of mechan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40B23K35/22
Inventor 郑子行李志提宋毓瑛刘炜马恒胜
Owner TIANJIN BRIDGE WELDING MATERIALS GROUP
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