What are the precautions before and after the production of stainless steel pressure vessels?
When producing stainless steel pressure vessels and pressure elements, they must be carried out in closed and independent production workshops, and must not be mixed with other products of black metal products. In addition, if there are carbon steel components attached to stainless steel pressure vessels, both The production site should also be separate.
In order to avoid contamination by iron ions and other harmful impurities, the production site of stainless steel pressure vessels must always be dry and clean. The floor should be covered with rubber or wood pallets. Parts of semi-finished products and finished products should be stacked on top of wooden pallets.
Stainless steel pressure vessels use special roller frames and lifting fixtures during the production process. Suspended cables for hoisting containers and parts shall be rope hoisting cables or metal hoisting cables sheathed with flexible materials. The soles of the workers at the production site cannot have sharp foreign objects such as nails.
Stainless steel materials or components used in production shall be equipped with appropriate anti-iron ion contamination and scratching transport tools during turnover and transportation. At the same time, the surface treatment of stainless steel pressure vessels should also be equipped with independent and higher standards of environmental protection measures, such as away from painting.
In stainless steel pressure vessel manufacturing materials, stainless steel material can not be stratified, the surface can not have cracks, scars and other defects, the surface of the stainless steel material subjected to pickling can not have oxide scale and over pickling phenomenon.
The stainless steel materials used for manufacturing should have clear and clear storage marks, and be stored separately according to the brand number, specifications and furnace batch number. They cannot be mixed with carbon steel, and they must not be allowed to move on stainless steel plate. Chlorine-free, sulfur-free markers are written to ensure the integrity of the stainless steel surface. During the lifting process of the stainless steel plate, appropriate measures shall be taken to avoid distortion of the stainless steel plate. The lifting rope shall be sheathed to prevent damage to the stainless steel surface.
In the production of stainless steel pressure vessels in the pressure test, air tightness test and packaging process, and the surface of the contact with the outside world, such as the occurrence of the destruction of the passive film, it is necessary to take timely measures to re-passivation. All sealing surfaces and nozzles of the container should be properly protected in time. The carbon steel area of the container is to be coated with a protective paint. The stainless steel part usually does not need to be protected by painting, unless otherwise required by the design drawings.
Source: China Pressure Vessels Manufacturer – www.secmachinery.com
www.secmachinery.com is one of the leading china filtration equipment & sanitary stainless steel pressure vessels manufacturer, with professional factory. We focus on the sanitary pressure vessels, filtration equipment research and development, manufacturing, sales and service since the company been established. Our products is widely used on bio-pharmaceutical, food and beverage, fine chemical industry.
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