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Gas-shielded welding stainless steel wire with high hardness and strong acid corrosion resistance and its preparation method and application

A high hardness, gas shielded welding technology, applied in the field of welding materials in the field of welding technology, can solve the problems of low welding wire hardness, and achieve the effects of strong acid corrosion resistance, good manufacturability and low cost

Active Publication Date: 2022-05-06
郑州凯博焊割设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a gas shielded welding stainless steel welding wire with high hardness and strong acid corrosion resistance and its preparation method and application, so as to solve the technology of using standard austenitic stainless steel welding wire with low hardness at the present stage question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: A gas shielded welding stainless steel wire with high hardness and strong acid corrosion resistance

[0045] Including the following elements by mass percentage: C 0.01%, Mn1.2%, Si 0.7%, Cr16.8%, Ni5.8%, Mo2.8%, Cu3.5%, B1.5%, Nb0.4%, V0.3%, S 0.01%, P 0.015%, and the balance is Fe.

[0046] The main materials and auxiliary materials for preparing the welding wire embodiment are shown in Table 1; the raw material allocation strategy (including main materials and auxiliary materials) for preparing the welding wire embodiment is shown in Table 2; the test piece number is No. 1, and the test results are shown in Table 3.

[0047] The manufacturing process of this embodiment is as follows: select appropriate alloying elements, ferroalloy and pure iron, and carry out smelting under the atmosphere of vacuum or inert gas protection according to the designed ratio. During the smelting process, inert gas protection is required when adding manganese. After all the ma...

Embodiment 2

[0049] Embodiment 2: the difference with embodiment 1 is:

[0050] Including the following elements by mass percentage: C 0.015%, Mn1.1%, Si 0.75%, Cr17.2%, Ni5.5%, Mo2.7%, Cu3.8%, B1.3%, Nb0.45%, V0.3%, S 0.011%, P 0.016%, and the balance is Fe.

[0051] The main materials and auxiliary materials for preparing the welding wire embodiment are shown in Table 1; the raw material allocation strategy (including main materials and auxiliary materials) for preparing the welding wire embodiment is shown in Table 2; the test piece number is No. 2, and the test results are shown in Table 3.

Embodiment 3

[0052] Embodiment 3: the difference with embodiment 1 is:

[0053] Including the following elements by mass percentage: C 0.02%, Mn1.0%, Si 0.8%, Cr17.5%, Ni5.5%, Mo2.8%, Cu3.5%, B1.2%, Nb0.45%, V 0.3%, S 0.012%, P 0.016%, and the balance is Fe.

[0054] The main materials and auxiliary materials for preparing the welding wire embodiment are shown in Table 1; the raw material allocation strategy (including main materials and auxiliary materials) for preparing the welding wire embodiment is shown in Table 2; the test piece number is No. 3, and the test results are shown in Table 3;

[0055] Table 1. prepares main material and auxiliary material of described welding wire embodiment:

[0056] .

[0057] Table 2 Raw material allocation strategy (including main materials and auxiliary materials) for the preparation of the welding wire

[0058] .

[0059] A gas-shielded welding stainless steel welding wire with high hardness and strong acid corrosion resistance. The producti...

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Abstract

The invention discloses a gas shielded welding stainless steel welding wire with high hardness and strong acid corrosion resistance and its preparation method and application. The welding wire includes the following elements in mass percentage: C≤0.03%, Mn 0.6-1.5%, Si 0.5~1.2%, Cr 14.0~19.0%, Ni 4.0~8.0%, Mo 2.0~3.0%, Cu 2.0~5.0%, B 0.5~2.5%, Nb 0.2~0.7%, V 0.2~0.5%, S≤0.03 %, P≤0.03%, and the balance is Fe. The billet of this kind of welding wire is precisely smelted under vacuum and inert gas atmosphere. The welding wire of the present invention aims to solve the technical problem of requiring the deposited metal to have high hardness and strong acid corrosion resistance at the same time.

Description

technical field [0001] The invention belongs to the welding material in the field of welding technology, and relates to a gas-shielded welding stainless steel wire with high hardness and strong acid corrosion resistance, a preparation method and application thereof. Background technique [0002] The coal machinery manufacturing industry produces a large number of new hydraulic supports for downhole service every year, and at the same time, a large number of used hydraulic supports need to be repaired and refurbished. Among them, the jack part of the hydraulic support is the most important core part of the entire equipment system. The hydraulic support jack part is composed of a column (live column), a middle cylinder, an outer cylinder, a seal ring combination, and a guide sleeve. According to the requirements of manufacturing, refurbishment and service, the outer surface of the column and the middle cylinder must be modified to meet the comprehensive requirements of high ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K9/167B23K9/32
CPCB23K35/308B23K9/167B23K9/32
Inventor 桑俊波
Owner 郑州凯博焊割设备有限公司
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