Selection of stainless steel thermal insulation water tank

Stainless steel insulation water tank material: The inner medium can be made of polyurethane foam, polystyrene, rock wool, and PEF. The outer layer can be made of stainless steel sheet, galvanized sheet, aluminum sheet or color steel sheet.

Principle of stainless steel heat preservation water tank: The heat preservation water tank is made of stainless steel plate or color steel plate as the surface layer, and closed-cell flame retardant self-extinguishing polystyrene material plate or polyurethane as the core layer. Through optimized combination, the inner and outer layers can achieve the best together Insulation effect. The advantages of stainless steel thermal insulation water tank, the water tank has the advantages of beautiful appearance, high mechanical strength, excellent performance, convenient assembly and so on. The time limit of the stainless steel thermal insulation water tank is within 5 degrees within 24 hours at room temperature. Stainless steel insulation water tank specifications, 0.1 tons to 3000 tons. Scope of application of stainless steel thermal insulation water tank: heat pump hot water system, solar hot water system, boiler hot water system, water heater and various places that require liquid insulation.

Features of stainless steel insulated water tank:

1. The joints are welded by high-frequency resistance seam welding to ensure that it is not easy to rust and leak.
2. Made of SUS304 stainless steel plate, light in weight, beautiful in appearance, clean and hygienic.
3. The 50mm imported polyurethane foam layer has small heat loss and good thermal insulation effect.

Quality Requirements Characteristic Micro Items

(1) Material:

①DDQ (deep drawing quality) material: refers to the material used for deep drawing (punching), which is what we call soft material. The main characteristics of this material are high elongation (≧53%) and high hardness. Low (≦170%), the internal grain grade is between 7.0 and 8.0, and the deep drawing performance is excellent. At present, many companies that produce thermos and pots generally have higher processing ratios (BLANKING SIZE/product diameter), and their processing ratios are 3.0, 1.96, 2.13, and 1.98, respectively. SUS304 DDQ material is mainly used for these products that require a higher processing ratio. Of course, products with a processing ratio exceeding 2.0 generally require several passes of stretching to complete. If the extension of raw materials is not achieved, the products are prone to cracks and pull-throughs when processing deep-drawn products, which affects the qualified rate of finished products, and of course increases the cost of manufacturers;

②General materials are mainly used for materials other than DDQ applications. This material is characterized by relatively low elongation (≧45%), relatively high hardness (≦180), and internal grain size between 8.0 and 9.0. , Compared with DDQ material, its deep drawing performance is relatively poor, it is mainly used for products that can be obtained without stretching, such as spoons, spoons, forks, electrical appliances, steel pipes, etc. But it has an advantage compared with DDQ material, that is, the BQ property is relatively good, which is mainly due to its slightly higher hardness.

(2) Surface quality:

Stainless steel sheet is a very expensive material, and customers have very high requirements on its surface quality. However, in the production process of stainless sheet, various defects will inevitably appear, such as scratches, pits, creases, pollution, etc., so its surface quality, such as scratches, creases and other defects, whether it is a high-grade material or a low-grade material. It is not allowed, and the defect of pitting is never allowed in spoons, spoons, forks, and production, because it is difficult to throw it away when polishing. We determine the quality level of the surface according to the degree and frequency of various defects on the surface, so as to determine the product level.