Polyurethane sealing products are the key components of sealing equipment, the inspection process is divided into qualified standard products and unqualified products, quality performance requirements are very strict, sealed storage management and sealed product packaging and transportation process is also strictly orderly, orderly work order better improve the quality requirements of sealing products required by customers.
The importance of many sealing specifications and models depends on the application of characteristics, pay attention to the quality detection of the external end face, the internal pressure of the work step, the direct sealing cylinder and the piston contact surface, the sealing surface gloss and cleaning should be strictly standardized, otherwise it will affect the operation of the sealing equipment, good polyurethane sealing, can not have defects that affect the product characteristics.
The appearance of the polyurethane rubber sealing ring should be neat, no deformation, distortion, damage, should be clean, no burrs, burrs, damage; No impurities, pores, cracks, color should be bright, not cloudy; Secondly, the end face of the polyurethane seal is smooth, not dry, toughness and toughness are obvious, moderate hardness, sealing performance must be tensile strength, tear strength, a certain hardness, is a good seal.
Seal specification inspection: piston drum seal ring size inspection index Seal ring diameter and hydraulic cylinder diameter, seal ring diameter and piston seal groove bottom diameter, seal body total width and seal groove width match level. According to the sealing structure, the sealing ring shape specification of the corresponding specification model should match the sealing structure. Specification inspection is to detect the sealing rings that cannot be well matched, find out the reasons, correct the factors of unqualified products, improve the number of qualified products, and improve product quality.
The storage environment of polyurethane seals must be dry at room temperature, and ordinary incandescent lamps should be used for lighting in the storage room, and there should be no wet and cold conditions around. Polyurethane seal packaging standard enterprise identification and seal model material specifications, can be detailed surface content: product name, specification and model, production inspection batch number, trademark, etc. ; When loading, check product quality at any time, check product specifications, to avoid errors or mixing unqualified products. Batch delivery, be careful not to confuse; Be careful during sealing transportation to prevent extrusion, throwing, collision, and avoid sun and rain during transportation; Ensure quality before the seal is put into use, especially on the working face.
The entire production process of polyurethane seals is very complex, transportation and storage should be scientific and appropriate, and inventory goods should be regularly sampled.
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