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Metal diaphragm stamping process

A metal diaphragm and process technology, applied in the direction of metal material coating process, manufacturing tools, coatings, etc., can solve the problems of scratches and fractures in the stamping process of metal diaphragms, and the surface is prone to corrosion, so as to improve product quality and ensure Product quality, the effect of ensuring product qualification rate

Pending Publication Date: 2021-06-11
南京宁欣机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a metal diaphragm stamping process to solve the problems that the metal diaphragm is prone to scratches and fractures and the surface is prone to corrosion during the stamping process proposed in the background art

Method used

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  • Metal diaphragm stamping process

Examples

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Embodiment 1

[0025] A metal diaphragm stamping process, comprising the following steps:

[0026] Step 1: Soften the metal diaphragm blank, place the metal diaphragm in an annealing furnace and heat it to 450 °C at a heating rate of 90 °C / h, and add annealing oil to accelerate heat conduction. The holding time is 4 hours. Slow cooling at a cooling rate of 20°C / h, and air cooling when cooled to 200°C;

[0027] Step 2: Pickling the metal diaphragm blank, placing the cooled metal diaphragm in the pickling tank, adding pickling liquid to the pickling tank, adopting the dipping pickling method, reacting for 45 minutes, and removing the surface oxide clear;

[0028] Step 3: Alkaline cleaning of the metal diaphragm blank, adding 2 parts of emulsifier, 15 parts of alkaline agent, 2 parts of trisodium phosphate, 100 parts of water and 6 parts of sodium nitrite in another reaction tank, after soaking for 45 minutes , to clean the surface oil and other dirt;

[0029] Step 4: Stamp the metal diaphra...

Embodiment 2

[0038] A metal diaphragm stamping process, comprising the following steps:

[0039] Step 1: Soften the metal diaphragm blank, place the metal diaphragm in an annealing furnace and heat it to 550 °C at a heating rate of 100 °C / h, and add annealing oil to accelerate heat conduction at the same time. The holding time is 3 hours. Slow cooling at a cooling rate of 30°C / h, and air cooling when cooled to 220°C;

[0040] Step 2: Pickling the metal diaphragm blank, placing the cooled metal diaphragm in the pickling pool, adding pickling liquid to the pickling pool, using the dipping pickling method, reacting for 40 minutes, and removing the surface oxide. clear;

[0041] Step 3: Alkaline cleaning of the metal diaphragm blank, adding 4 parts of emulsifier, 25 parts of alkaline agent, 3 parts of trisodium phosphate, 90 parts of water and 8 parts of sodium nitrite in another reaction tank, soaked for 35 minutes , to clean the surface oil and other dirt;

[0042] Step 4: Stamp the metal...

Embodiment 3

[0051] A metal diaphragm stamping process, comprising the following steps:

[0052] Step 1: Soften the metal diaphragm blank, place the metal diaphragm in an annealing furnace and heat it to 650 °C at a heating rate of 110 °C / h, and add annealing oil to accelerate heat conduction. The holding time is 2 hours. Slow cooling at a cooling rate of 50°C / h, and air cooling when cooled to 240°C;

[0053] Step 2: Pickling the metal diaphragm blank, placing the cooled metal diaphragm in the pickling pool, adding pickling solution to the pickling pool, using the dipping pickling method, reacting for 30 minutes, and removing the surface oxide. clear;

[0054] Step 3: Alkali washing treatment of metal diaphragm blank, add 6 parts of emulsifier, 35 parts of alkaline agent, 5 parts of trisodium phosphate, 80 parts of water and 10 parts of sodium nitrite in another reaction tank, soak for 30 minutes , to clean the surface oil and other dirt;

[0055] Step 4: Stamp the metal diaphragm blank...

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Abstract

The invention discloses a metal diaphragm stamping process, relates to the technical field of metal diaphragm machining, and aims to solve the problems that in the stamping process of an existing metal diaphragm, scratching and breakage are prone to occurring, and the surface is prone to corrosion. The process comprises the following steps that 1, softening treatment is carried out on a metal diaphragm blank, the metal diaphragm is placed in an annealing furnace, heating to a proper temperature is carried out at a fixed heating speed, and slowly cooling is carried out at a fixed cooling speed after the heat preservation time is up; 2, acid pickling treatment is carried out on the metal diaphragm blank, the cooled metal diaphragm is placed in an acid pickling tank, and removal is carried out on surface oxides by adopting a dipping acid pickling method; 3, alkali washing treatment is carried out on the metal diaphragm blank, and after the metal diaphragm blank is soaked in an alkali washing solution for a fixed time, removal is carried out on surface oil stains and other dirt; 4, stamping is carried out on the metal diaphragm blank obtained after pretreatment; 5, ion nitriding and hardness strengthening treatment are carried out on the metal diaphragm after stamping is finished; and 6, packaging and warehousing are carried out on the metal diaphragm.

Description

technical field [0001] The invention relates to the technical field of metal diaphragm processing, in particular to a metal diaphragm stamping process. Background technique [0002] The pressure sensor consists of a metal diaphragm, a glass ring, an optical fiber flange and an optical fiber plug. The center of the concentric circle coincides with the center of the glass ring. When the external pressure changes, the metal diaphragm will deform, thereby changing the cavity length of the F-P cavity, causing the phase shift of the reflection spectrum, and thus calculating the force acting on the metal diaphragm. Pressure, with the continuous development of the level of technology, the demand for pressure sensors is also increasing. The quality of the metal diaphragm determines the use of the pressure sensor. In the production process of the metal diaphragm, generally use Stamping method for mass production. [0003] However, there are some problems in the stamping process of t...

Claims

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Application Information

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IPC IPC(8): C21D1/32C21D9/46C23C8/36C23G1/02C23G1/14B21D22/20
CPCC21D1/32C21D9/46C23G1/02C23G1/14C23C8/36B21D22/20B21D22/201
Inventor 李心翠
Owner 南京宁欣机械有限公司
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