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Production process suitable for high-strength round link chain under marine environment

A marine environment and production process technology, applied to the improvement of process efficiency, metal material coating process, manufacturing tools, etc., can solve the problems of poor anti-corrosion performance, environmental impact, rough appearance of the chain, etc., and achieve the effect of improving anti-corrosion performance

Active Publication Date: 2016-06-08
南通瑞金制链科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing chain has a rough appearance and is accompanied by dust, which will have an impact on the environment when combining tools, and has poor anti-corrosion performance

Method used

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with embodiments.

[0044] A production process for high-strength round link chains suitable for marine environments, comprising the following steps:

[0045] Step 1) steel inspection: inspect the content and mechanical properties of each element in the steel;

[0046] Carbon: 0.21-0.25;

[0047] Silicon: 015-035;

[0048] Manganese: 0.7-0.9;

[0049] Sulfur: residual content ≤ 0.035;

[0050] Phosphorus: residual content ≤ 0.035;

[0051] Chromium: 0.4-0.6;

[0052] Nickel: 0.5-0.8;

[0053] Copper: residual content ≤ 0.03;

[0054] Molybdenum: 0.15-0.25;

[0055] Mechanical properties:

[0056] Tensile strength: σb((MPa)≥980;

[0057] Yield strength: σs (MPa) ≥ 785;

[0058] Elongation: δ5(%)≥9;

[0059] Section expansion rate: ψ(%)≥40;

[0060] Impact energy: Akv(J)≥47;

[0061] Impact toughness value: αkv(J / cm2)≥59;

[0062] Hardness: ≤197HB;

[0063] Step 2) material preparation,...

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Abstract

The invention discloses a production process suitable for a high-strength round link chain under a marine environment. The production process comprises the following steps of steel inspection, preparing for materials, blanking, chaining, welding, correcting, first repair, thermal treatment, experiment load testing, second repair, physical rust removal, surface anticorrosion treatment and delivery inspection. The surface anticorrosion treatment is realized by Dacromet treatment after zinc impregnation, so that the anticorrosion of a product is greatly improved; and due to the combination of two anticorrosion treatment ways, the anticorrosion of the chain is greatly improved.

Description

technical field [0001] The invention belongs to the field of metal production methods, and in particular relates to a production process for high-strength round link chains suitable for marine environments. Background technique [0002] The existing chain has a rough appearance and is accompanied by dust, which affects the environment when tools are combined, and has poor anticorrosion performance. Contents of the invention [0003] The purpose of the present invention is to overcome the above problems in the prior art, and provide a production process for high-strength round link chains suitable for marine environments, with good surface anti-corrosion performance. [0004] In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention is realized through the following technical solutions: [0005] A production process for high-strength round link chains suitable for marine environments, comprising the fo...

Claims

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Application Information

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IPC IPC(8): B23P15/00C23C10/36C21D9/00C21D1/18
CPCB23P15/00C21D1/18C21D9/0087C23C10/36Y02P10/20
Inventor 邵华戴小乐
Owner 南通瑞金制链科技有限公司
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