A kind of spring washer manufacturing process
A spring washer and manufacturing process technology, applied in the field of manufacturing process, can solve the problems of difficult deformation, unusable spring washer, high hardness, etc., and achieve the effects of low cost, high product dimensional accuracy, and high forming accuracy
Active Publication Date: 2019-01-08
中国原子能工业有限公司
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Problems solved by technology
However, due to the high hardness of the material, the deformation is not easy, and heat treatment is required according to the nuclear level, the existing spring washer manufacturing method cannot be used for the nickel-based superalloy GH4169
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[0032] A kind of spring washer manufacturing process, comprises the steps:
[0033] Step 1: Stamping
[0034] Stamping includes: positioning hole stamping, inner circle stamping, outer circle stamping and dish surface stamping.
[0035] Positioning hole punching: Punch positioning holes at both ends of the strip, two positioning holes are used as a group, the positioning holes of the same group are located at both ends of the strip, and the distance between the positioning holes of adjacent groups is the same.
[0036] The positioning hole is used for positioning in subsequent processes.
[0037] Inner circle stamping: Use inner hole punch for inner circle stamping, punch out the excess round part to form a round hole, which is the round hole of the spring washer.
[0038] Outer circle stamping: Use the outer circle punch for outer circle stamping, stamping according to the size of the outer circle of the spring washer, the stamped out ring is the prototype of the spring was...
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Abstract
The invention belongs to a manufacturing process and particularly relates to a spring washer manufacturing process. The spring washer manufacturing process comprises the following steps: Step 1: punching, the punching step includes punching a location hole, punching an internal circle, punching an excircle and punching a dish face; Step 2: carrying out aging heat treatment, namely, carrying out aging heat treatment on the spring washer obtained by punching; Step 3: carrying out normal temperature forced compression treatment, namely, carrying out forced compression treatment for 5 times, each time exerting 2100 N of carrying capacity to the spring washer, and maintaining 30-60 seconds; and Step 4: carrying out hot prestressing. The spring washer manufacturing process has the following remarkable effects of being automatic, high in efficiency, low in cost, especially suitable for small scale production, flexible and changeable, high in applicability, product dimensional accuracy and alterationability.
Description
technical field [0001] The invention belongs to a manufacturing process, in particular to a spring washer manufacturing process. Background technique [0002] Spring washers are one of the most widely used parts for shock absorption, buffering and anti-falling. Depending on the field of application, spring washers are made of different materials. Most applications do not require spring washers to have special properties, so most of them use 50CrVA, 60Si2MnA or other alloys, and their manufacturing processes are relatively mature. [0003] However, the spring washers used in nuclear reactors are quite special, specifically reflected in: 1. Nuclear reactors have high safety requirements, so spring washers can not only play the role of shock absorption and buffering, but also need to have thermal expansion between supplementary materials Poor functionality. 2. Nuclear reactors need to consider the ability to resist shocks under extreme conditions, requiring spring washers to...
Claims
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IPC IPC(8): B21D35/00B21D37/10C21D9/40
CPCB21D35/001B21D35/002B21D37/10C21D9/40
Inventor 林峰叶远东李杰华李金魁杨荐博钟鸣金海清
Owner 中国原子能工业有限公司