Does anyone have detailed information on gasketing?

The lining is generally PP lining for steel equipment. The general manufacturing process is as follows: the surface of the steel equipment is polished and rusted away, especially in areas such as welds and corners； Then weld ordinary steel wire mesh ； Next, the steel equipment is heated using liquefied gas; PP powder is placed on the surface of this heated steel equipment, and a machine is used to press it flat and compact, after which it is allowed to cool naturally. The general rubber lining thickness is around 3 mm. The key step in this process is grinding and rust removal, otherwise delamination will occur.

I have detailed information available; it depends on what raw materials you choose. For rubber used in linings, there are options such as NR, IR, SBR, CR, IIR, NBR, BR, EPR, CSM, PIB, and more. You can also refer to the standards: HG/T2698-95 Rubber sheets for equipment lining, HG/T2451-93 Rubber linings for equipment corrosion protection, HGJ32-90 Rubber linings for chemical equipment, and so on. QQ122034313:)

Last year, a batch of 6 pieces of equipment was manufactured at a factory in Zhangjiagang; the rubber lining for these devices was produced by a company in Wuhan, with supervision carried out by Shanghai Modi Company – the quality was quite good. After it is completed, specialized equipment is used to check whether it fits properly.

What does the landlord want it for? I have it here: zzzjwei@126.com

A rubber lining involves attaching a pre-processed rubber sheet to a metal surface using adhesive, thereby separating corrosive agents from the metal substrate and providing protection. Both natural rubber and synthetic rubber possess high chemical stability, capable of withstanding non-oxidizing strong acids, organic acids, alkaline solutions, and salt solutions. It is only unstable in strongly oxidizing acids and aromatic compounds. Therefore, rubber linings can be used in many corrosive media. A rubber lining involves attaching pre-processed sheets to a metal surface, with the joints being bonded using overlapping methods; as a result, it possesses strong integrity. It does not suffer from defects such as pinholes or bubbles that occur due to solvent evaporation before the curing of coatings or fiberglass linings, nor does it have as many bonding seams as brick-lined surfaces. Rubber linings generally have high density and strong impermeability; even if a portion of the lining separates from the surface of the substrate, corrosive agents cannot easily penetrate. Rubber linings possess a certain degree of elasticity and generally good toughness; they can withstand mechanical and thermal shocks, making them suitable for use in environments subject to impact or abrasion. A major advantage of rubber linings is their strong adhesion to steel; this adhesion is much greater than that achieved using ordinary resin adhesives. When attempting to remove the vulcanized rubber lining from the metal surface, cohesive failure of the rubber itself often occurs. As a result, rubber linings can be used in vacuum environments, whereas other types of linings such as plastic linings or fiberglass linings are generally not suitable for use under negative pressure conditions, due to their relatively low adhesion to the substrate surface. Unvulcanized rubber sheets have good plasticity and can be shaped into the desired form under hot pressing. Therefore, the rubber sheet can be more easily fitted tightly against metal surfaces with complex shapes. The construction conditions for rubber lining are far superior to those of coatings and fiberglass-reinforced plastics; it does not require a transformation from liquid to solid state. The toxicity associated with solvent evaporation during installation is low, making the process convenient and fast. The disadvantage of rubber linings is that their operating temperature is generally low; for example, the long-term operating temperature for hard rubber linings is 0~65°C, while that for soft and semi-soft rubber linings is -25~75°C. For commonly used varieties, their performance in strong oxidizing media and solvents is poor. As new rubber varieties continue to be developed, the shortcomings will gradually be addressed. At present in China, rubber linings are mainly made from natural rubber applied to the surface of steel or cast iron, while the use of synthetic rubber is still relatively limited. Rubber linings have a wide range of applications; they can be used as linings for equipment, as anti-corrosion coatings for rotating parts, and even in smaller pumps, valves, and pipes with small diameters. It can sometimes also be used as a impermeable base layer for brick veneer to overcome more demanding processing conditions.

The equipment uses HGJ32-90 rubber lining; the inner wall thickness is 5 mm, and the thickness of the rubber lining on the piping system is 3 mm