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A kind of processing method of metal sealing sleeve

A metal sealing sleeve and processing method technology, which is applied to other household appliances, household appliances, applications, etc., can solve the problems of low qualified rate of finished products, low material utilization rate, high processing cost, and achieve good mechanical properties, less processing steps, The effect of product quality improvement

Active Publication Date: 2018-03-09
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional machining process has the disadvantages of low forming precision, low material utilization rate, low efficiency, and low yield rate. In this way, the processing cost of the metal sealing sleeve is too high, and the qualified rate of the finished product is low, which cannot meet the needs of metal sealing sleeves in oil wells. massive demand for

Method used

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  • A kind of processing method of metal sealing sleeve
  • A kind of processing method of metal sealing sleeve
  • A kind of processing method of metal sealing sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, the steps of preparing the metal sealing sleeve are as follows:

[0033] Step 1. Use high-speed hot extrusion process to make tube blanks

[0034] Such as figure 2 As shown, the billet whose temperature is higher than the recrystallization temperature of the material is placed in a closed container composed of the extrusion cylinder 7, the extrusion die 8 and the extrusion rod 4. The extrusion rod 4 is in the extrusion cylinder 7 and the extrusion die 8 Correspondingly, an end of the extrusion rod 4 corresponding to the extrusion die 8 is provided with an extrusion pad 6 and the center of the extrusion rod 4 is provided with a core rod 5. The pressing force exerted by the pressing rod 4 forces the metal to flow out of the hole of the pressing die 8, thereby obtaining the tube blank 1 of the metal sealing sleeve. The raw material used in the production method is 316L stainless steel tube blank, the deformation temperature is 1110°C, the extrusion speed i...

Embodiment 2

[0040] In this embodiment, the steps of preparing the metal sealing sleeve are as follows:

[0041] Step 1. Use high-speed hot extrusion to make billets. The process flow is the same as step 1 in Example 1. The raw material of the tube blank is a nickel-titanium alloy tube blank. The hot extrusion temperature is 900°C, the extrusion speed is 100mm / s, and the die type The cavity height is 50mm, and the cavity profile adopts the curve shape expressed in space by the three-dimensional cubic equation.

[0042] Step 2. Use the cross wedge rolling process to process the outer contour part of the sealing sleeve. The process flow is the same as the step 2 in Example 1. The rolling speed is 10mm / s, the rolling temperature is 850°C, the forming angle is 40°, and the width is extended. The angle is 6°, and the reduction of area is 40%.

[0043] Step 3. Use the hydraulic bulging process to process the arc-shaped thin wall of the sealing sleeve. The process flow is the same as the step 3 in Exam...

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Abstract

The invention belongs to the field of machining techniques for metal thin-wall parts for gyrorotors with complex sections, and particularly relates to a machining method of metal sealing sleeves. Firstly, a blank is made by adopting a high-speed hot extrusion technique, then the external outline portion of a gyrorotor part is made through cross wedge rolling extrusion, and finally the molding requirement of the thin-wall portion is ensured through a hydro-bugling technique, specifically, through adoption of the high-speed hot extrusion technique and the cross wedge rolling technique, the deformation capacity of metal can be improved, the surface quality of the product is higher, and the mechanical property is better. Compared with traditional techniques, both the efficiency and product quality are improved. Besides, compared with a common machining technique, the hydro-bugling technique has the advantages that the number of machining procedures is small, the molding precision is high, materials are saved, and the mechanical property of parts is good.

Description

Technical field [0001] The invention belongs to the processing technology field of metal thin-walled parts of a complex cross-section revolving body, and is specifically a processing method of a metal sealing sleeve. Background technique [0002] With the increasing amount of oil consumption now, the amount of shallow oil that can be exploited becomes less and less, so the current trend is to increase the exploitation depth, but as the exploitation depth increases, the underground working conditions become more As the depth increases by 100m, the temperature increases by 3°C and the pressure increases. Therefore, rubber as a non-metallic sealing material is more prone to damage, which is directly related to the success or failure of a well. [0003] For this reason, it is becoming more and more urgent as an alternative to metal sealing. against figure 1 The traditional machining process of the metal sealing sleeve shown is as follows: firstly, the stainless steel bar needs to be d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D35/00B21D51/00
Inventor 张士宏宋鸿武金平陈岩尚晓峰程明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI