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Flange machining process

A processing technology, flange technology, applied in the field of flange processing technology, can solve the problem of not being able to improve the high-temperature oxidation resistance of the flange, and achieve the effect of high toughness, high hardness, and strong high-temperature oxidation resistance

Inactive Publication Date: 2016-02-03
苏州众捷汽车零部件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Flange, as a connecting part for connecting various pipe fittings, in some cases, needs to be in a high-temperature and oxidative corrosion environment. However, there is no way to improve the high-temperature oxidation resistance of flanges in the general flange processing technology. craft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A processing technology for a flange, comprising the steps of:

[0014] 1) Grinding the steel blank externally to obtain the flange blank;

[0015] 2) Use a milling cutter to process through holes, blind holes, positioning grooves, bosses and grooves for connection on the flange blank to obtain a rough flange;

[0016] 3) Further surface grinding the rough outer and inner surfaces of the flange;

[0017] 4) Put the polished flange into the high anti-oxidation hard coating sol for 20 times of dipping, and then dry; each dipping time is 30s, and the drying temperature is 70°C;

[0018] 5) Put the coated flange into a vacuum furnace and sinter at 1500°C to obtain the finished flange; the heating steps of sintering include: at 600~1000°C, the heating rate is 5°C / min, and the temperature is kept for 1h; to 1100°C At ~1500°C, the heating rate is 15°C / min, and the temperature is maintained for 1 hour; when the temperature reaches 1600~1800°C, the temperature is increased at ...

Embodiment 2

[0020] A processing technology for a flange, comprising the steps of:

[0021] 1) Grinding the steel blank externally to obtain the flange blank;

[0022] 2) Use a milling cutter to process through holes, blind holes, positioning grooves, bosses and grooves for connection on the flange blank to obtain a rough flange;

[0023] 3) Further surface grinding the rough outer and inner surfaces of the flange;

[0024] 4) Put the polished flange into the high anti-oxidation hard coating sol for 30 dips, and then dry; each dipping time is 60s, and the drying temperature is 80°C;

[0025] 5) Put the coated flange into a vacuum furnace and sinter at 1800°C to obtain the finished flange; the heating steps of sintering include: at 600-1000°C, the heating rate is 10°C / min, and the temperature is kept for 3 hours; to 1100°C At ~1500°C, the heating rate is 20°C / min, and the temperature is kept for 3 hours; when it reaches 1600~1800°C, the temperature is increased at a rate of 15°C / min, and ...

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PUM

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Abstract

The invention discloses a flange machining process. The flange machining process is characterized by comprising the following steps: 1) the external of a steel blank is polished to obtain a flange blank; 2) a milling tool is used for machining a through hole, a blind hole, a positioning groove and a boss and a groove for connection on the flange blank to obtain a roughened flange; 3) the outer surface and the inner surface of the roughened flange are further polished; 4) the polished flange is put in hard coating sol with high oxidation resistance for dipping by 20-30 times, and is dried; every dipping time is 30-60 s; and the drying temperature is 70-80 DEG C; and 5) the flange coated with a coating layer is put in a vacuum furnace for sintering at a temperature of 1500-1800 DEG C to obtain a finished flange. The sintering heating step comprises the following substeps: the heating speed is 5-10 DEG C / min at a temperature of 600-1000 DEG C, and the temperature is kept by 1-3 h; the heating speed is 15-20 DEG C / min at a temperature of 1100-1500 DEG C, and the temperature is kept by 1-3 h; the heating speed is 10-15 DEG C / min at a temperature of 1600-1800 DEG C, and the temperature is kept by 1-3 h; and the vacuum degree is 6-10 Pa in the sintering process. The flange machining process is simple in preparation process; and the prepared flange is high in toughness and hardness and strong in high-temperature oxidation resistance.

Description

technical field [0001] The invention relates to a processing technology of a flange. Background technique [0002] Flange, as a connecting part for connecting various pipe fittings, in some cases, needs to be in a high-temperature and oxidative corrosion environment. However, there is no way to improve the high-temperature oxidation resistance of flanges in the general flange processing technology. craft. Contents of the invention [0003] The purpose of the present invention is to provide a flange processing technology, the process flow is simple, and the prepared flange has high toughness, high hardness, and strong high-temperature oxidation resistance. [0004] In order to achieve the above object, the technical solution of the present invention is to design a flange processing technology, comprising the following steps: [0005] 1) Grinding the steel blank externally to obtain the flange blank; [0006] 2) Use a milling cutter to process through holes, blind holes, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00F16L23/00
Inventor 解柏
Owner 苏州众捷汽车零部件股份有限公司