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A kind of tension clamp and preparation method thereof

A technology of tension-resistant clamps and preparation steps, which is applied in the direction of cable/conductor manufacturing, metal/alloy conductors, suspension/strain insulators, etc., and can solve problems such as unfavorable processing and application of cast iron parts, reduced casting performance, and hindered carbon graphitization. , to promote the formation of pearlite, improve corrosion resistance, and promote graphitization

Active Publication Date: 2017-08-04
ANHUI WEI LONG POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the current existing technology can improve the strength of cast iron to a certain extent, metal antimony is a toxic element and has the property of thermal expansion and contraction, which is not conducive to the post-processing and application of cast iron.
Tin is afraid of cold and heat, and its application range is narrow. Although its ductility is good, its ductility is extremely poor, and it will break when it is pulled. The increase in manganese content will hinder the graphitization of carbon and reduce the casting performance. High-strength cast iron formula and process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A strain clamp is composed of the following chemical components: 1.8% carbon, 1.65% silicon, 0.4% manganese, 0.15% phosphorus, 0.1% sulfur, 0.12% aluminum, 1.5% tungsten, 0.005% nitrogen, and 0.51% copper %, titanium 0.07%, chromium 0.25%, and the balance is iron.

[0026] A preparation method of a tension clamp, the preparation steps are as follows:

[0027] 1) Smelting: Add steel scrap, gray cast iron refurbishment, and stone tar recarburizer into the intermediate frequency induction furnace, raise the temperature to 1050°C, and then add ferromanganese, ferrotungsten, ceramic micropowder, ferrotitanium, ferrochrome, iron nitride, For hard aluminum, continue to heat up until it completely melts into molten iron, and then adjust the temperature of molten iron to 1560°C;

[0028] 2) Inoculation: evenly mix the electrolytic copper and inoculant and place it at the bottom of the ladle for inoculation treatment;

[0029] 3) Purification and slag removal: use a spray gun t...

Embodiment 2

[0035] A strain clamp is composed of the following chemical components: carbon 1.5%, silicon 1.7%, manganese 0.38%, phosphorus 0.25%, sulfur 0.08%, aluminum 0.13%, tungsten 1.8%, nitrogen 0.006%, copper 0.5% %, titanium 0.06%, chromium 0.3%, and the balance is iron.

[0036] A preparation method of a tension clamp, the preparation steps are as follows:

[0037] 1) Smelting: Add steel scrap, gray cast iron return material, and stone tar recarburizer into the intermediate frequency induction furnace, raise the temperature to 1100°C, and then add ferromanganese, ferrotungsten, ceramic micropowder, ferrotitanium, ferrochrome, iron nitride, For hard aluminum, continue to heat up until it completely melts into molten iron, and then adjust the temperature of molten iron to 1550°C;

[0038] 2) Inoculation: evenly mix the electrolytic copper and inoculant and place it at the bottom of the ladle for inoculation treatment;

[0039] 3) Purification and slag removal: use a spray gun to e...

Embodiment 3

[0045] A strain clamp is composed of the following chemical components: 1.6% carbon, 1.73% silicon, 0.35% manganese, 0.4% phosphorus, 0.12% sulfur, 0.1% aluminum, 2% tungsten, 0.002% nitrogen, and 0.48% copper %, titanium 0.08%, chromium 0.4%, and the balance is iron.

[0046] A preparation method of a tension clamp, the preparation steps are as follows:

[0047] 1) Smelting: Add steel scrap, gray cast iron return material, and stone tar recarburizer into the intermediate frequency induction furnace, raise the temperature to 1150°C, and then add ferromanganese, ferrotungsten, ceramic micropowder, ferrotitanium, ferrochrome, iron nitride, For hard aluminum, continue to heat up until it completely melts into molten iron, and then adjust the temperature of molten iron to 1580°C;

[0048] 2) Inoculation: evenly mix the electrolytic copper and inoculant and place it at the bottom of the ladle for inoculation treatment;

[0049] 3) Purification and slag removal: use a spray gun to...

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PUM

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Abstract

The invention discloses a tension clamp and a preparation method thereof. The tension clamp is composed of 1.5%-2.0% of carbon, 1.65%-1.8% of silicon, 0.35%-0.5% of manganese, 0.1%-0.4% of phosphorus, 0.05%-0.15% of sulfur, 0.1%-0.15% of aluminum, 1.2%-2.5% of tungsten, 0.0025-0.01% of nitrogen, 0.48%-0.55% of copper, 0.05%-0.08% of titanium, 0.2%-0.4% of chromium and the balance iron. The preparation method of the tension comprises the steps of smelting, inoculation purifying, pouring, transforming, quenching, tempering and the like. According to the prepared tension clamp, the strength and the hardness are high, and the tensile strength can reach 530-550 N / mm<2>; the abrasion resistance and the corrosion resistance of the tension clamp are also remarkably improved, the product overall performance is obviously improved, and the tension clamp is worth promoting.

Description

technical field [0001] The invention relates to an electric power fitting and a production process thereof, in particular to a tension clamp and a preparation method thereof. Background technique [0002] The tension clamp is used to fix the wire or lightning protection wire to the tension insulator string of the non-linear pole tower, and it acts as an anchor. According to different structures and installation conditions, tension clamps can be roughly divided into two categories: ① Tension clamps must bear all the tension of the conductor or lightning conductor, and the gripping force of the clamp is not less than the rated tensile force of the installed conductor or lightning conductor 90, but not as a conductor; ②The tension clamp not only bears the full tension of the wire or lightning conductor, but also acts as a conductor. It can be seen that the strain clamp has a high tensile strength requirement, and the commonly used strain clamp belongs to the malleable gray cas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/12C22C38/04C22C38/60C22C38/06C22C38/16C22C38/14C22C38/18C22C33/04C21D1/18C21D6/00H01B17/04H01B17/10H01B17/12H01B1/02H01B13/00H01B19/00
CPCC21D1/18C21D6/008C21D2211/002C22C33/04C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C22C38/16C22C38/18C22C38/60H01B1/02H01B13/00H01B17/04H01B17/10H01B17/12H01B19/00Y02P10/20
Inventor 孙邦进
Owner ANHUI WEI LONG POWER EQUIP
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