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High temperature resistance fastening piece and manufacture method thereof

A manufacturing method and fastener technology, which are applied to threaded fasteners, connecting components, bolts, etc., can solve the problems that alloy materials cannot be solid solution strengthened, the manufacturing method is complicated to operate, and the oxidation resistance of fasteners is poor, and the plasticity is achieved. Good, roughness, mechanical strength increase effect

Active Publication Date: 2013-06-26
ZHOUSHAN 7412 FACTORY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in general alloy materials, when the chromium content accounts for more than 12%, the fastener products will have strong oxidation resistance, and in the alloy material of the fastener, the proportion of chromium is insufficient, so the produced The fastener has poor oxidation resistance, and the alloy material of the fastener does not add nickel that can increase the stability of the product, so that the alloy material cannot be solid-solution strengthened, so the produced fastener has poor stability and poor plasticity, and The strength is not high, and in the production method of the high temperature resistant fastener, it needs to go through multiple processings to make the fastener of the required specification. It can be seen that the production method is cumbersome to operate and inconvenient to process. Therefore, the The ratio of high temperature resistant fasteners and the production method of high temperature resistant fasteners need to be further improved

Method used

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  • High temperature resistance fastening piece and manufacture method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment one: if figure 1 As shown, the high-temperature-resistant fastener of this embodiment is made of alloy material, and the composition and content of the alloy material are: carbon 0.06%, silicon 0.8%, manganese 1.8%, phosphorus 0.015%, sulfur 0.01%, Nickel 24%, chromium 13.5%, vanadium 0.1%, molybdenum 1%, titanium 1.9%, aluminum 0.15%, boron 0.001%, iron 56.664%.

[0024] The manufacturing method of the high temperature resistant fastener comprises the following steps:

[0025] Include the following steps:

[0026] 1. Select the alloy material in the above components, place the selected alloy material at room temperature for cold drawing, and cold draw it into the workpiece material of the required specification;

[0027] 2. Heat the workpiece material at a temperature of 890-940°C for 1.5-2.5 hours, then quickly cool the heated workpiece material to room temperature with cold water; or place the workpiece material at 940- Heating at a temperature of 990°C...

Embodiment 2

[0033] Embodiment two: if figure 1 As shown, the high-temperature-resistant fastener of this embodiment is made of alloy material, and the composition and content of the alloy material are: carbon 0.07%, silicon 0.9%, manganese 1.9%, phosphorus 0.025%, sulfur 0.02%, Nickel 25%, chromium 14.5%, vanadium 0.3%, molybdenum 1.25%, titanium 2%, aluminum 0.25%, boron 0.005%, iron 53.78%.

[0034] The manufacturing method of the high temperature resistant fastener comprises the following steps:

[0035] 1. Select the alloy material in the above components, place the selected alloy material at room temperature for cold drawing, and cold draw it into the workpiece material of the required specification;

[0036] 2. Heat the workpiece material at a temperature of 900°C for a holding time of 2 hours, and then quickly cool the heated workpiece material to room temperature with cold water; or, heat the workpiece material at a temperature of 980°C , the holding time is 1 hour; then the hea...

Embodiment 3

[0042] Embodiment three: as figure 1As shown, the high-temperature-resistant fastener of this embodiment is made of alloy material, and the composition and content of the alloy material are: carbon 0.08%, silicon 1%, manganese 2%, phosphorus 0.035%, sulfur 0.03%, Nickel 27%, chromium 16%, vanadium 0.5%, molybdenum 1.5%, titanium 2.35%, aluminum 0.35%, boron 0.01%, iron 49.145%.

[0043] The manufacturing method of the high temperature resistant fastener comprises the following steps:

[0044] 1. Select the alloy material in the above components, place the selected alloy material at room temperature for cold drawing, and cold draw it into the workpiece material of the required specification;

[0045] 2. Heat the workpiece material at a temperature of 950°C for 1.5 hours, then quickly cool the heated workpiece material to room temperature with cold water; or heat the workpiece material at a temperature of 8980°C , the holding time is 1.2 hours; then the heated workpiece materi...

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Abstract

The invention discloses a high temperature resistance fastening piece and a manufacture method thereof. The high temperature resistance fastening piece is made of an alloy material, wherein the alloy material comprises the following components in percentage by weight: 0.06 to 0.08 percent of carbon, 0.8 to 1 percent of silicon, 1.8 to 2 percent manganese, 0.015 to 0.035 percent of phosphor, 0.01 to 0.03 percent of sulfur, 24 to 27 percent of nickel, 13.5 to 16 percent of chrome, 0.1 to 0.5 percent of vanadium, 1 to 1.5 percent of molybdenum, 1.9 to 2.35 percent of titanium, 0.15 to 0.35 percent of aluminum, 0.001 to 0.01 percent of boron, and the balance of iron. The manufacture method of the high temperature resistance fastening piece comprises the following steps of: selecting materials; heating, cooling, cold upsetting for molding; rolling threads; insulating, and naturally cooling; and performing surface treatment. The high temperature resistance fastening piece has the advantages that the fastening piece can be used for reinforcing the oxidation resistance and stability of a product, so that the produced fastening piece is strong in oxidation resistance, stability and plasticity; and the manufacture method is simple in process and safe in operation, can be used for reinforcing the hardness and plasticity of the alloy material by means of softening treatment, so that the produced fastening piece is good in plasticity, good in hardness and high in strength.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to a high-temperature-resistant fastener and a manufacturing method thereof. Background technique [0002] In the prior art, a Chinese invention patent with the application number CN201010106938.3 titled "A Wire Steel for High-Strength Fasteners and Its Production Method" relates to a wire steel for fasteners and its production method. Its composition And weight percentage: C: 0.39~0.48, Si: 0.15~0.35, Mn: 0.30~0.90, Cr: 0.60~1.20, Als: 0.010~0.07, P≤0.035, S≤0.035, the rest are Fe and unavoidable impurities ; Production method: smelt with clean steel technology and continuously cast into billet, add Si-Ca wire in refining; heat the continuous casting billet to 980-1080°C; rough rolling, control its deformation at 70-80%; middle rolling : control its deformation at 80-90%; pre-finishing: control its deformation at 65-75%; water cooling to 1000-1020°C; finishing rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C21D8/06C21D7/02B23P15/00B21K1/44
Inventor 张兆璋张成利张义为赵萍丽夏盛斌黄玉龙
Owner ZHOUSHAN 7412 FACTORY
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