Why do you want to do a damp heat test? In the reliability experiment, the humidity is generally applied to the high temperature section, and the comprehensive effect of the high temperature and the late low temperature should be considered in the analysis of the humidity induced failure mechanism. In terms of mechanical properties, moisture invades the surface of the material into material decomposition, mold growth, deformation, and the like. If it acts at the same time as the high temperature, the moisture absorption of the insulating material is accelerated, and even adsorption, diffusion and absorption phenomena and respiration can occur, causing the surface of the material to swell, deform, foam, and become thick, and the friction of the moving parts can be increased or even stuck; Electrically, due to moisture, it is prone to condensation when the temperature changes, resulting in an electrical short circuit. Deterioration of the surface of organic materials caused by moisture can also cause deterioration of electrical properties, and at the same time, moisture at high temperatures can cause contact contamination of contact parts and poor contact of contacts. The main failure modes induced by humidity are: 1 electrical short circuit; 2 active component jam; 3 circuit board corrosion; 4 surface layer damage; 5 insulation material performance degradation. In addition, there is a certain correspondence between other types of environmental stresses and types of faults that can be excited. Applying a comprehensive stress in a product reliability test is more effective than adding a single stress to the defect of the product, because the influence of one environmental factor on the product is enhanced with another environmental factor and causes failure. This requires that in the RET of a specific product, it is necessary to deeply analyze the mechanism of the action of various types of stress on various types of defects of the product, and determine the optimal integrated mode of various stresses in RET. Application field Environmental simulation test chambers in various industries, pharmaceutical industry, biology applications Execution and satisfaction criteria 1.GB/T 11158-2008 high temperature test chamber technical conditions; 2. GB/T 10589-2008 low temperature test chamber technical conditions; 3. GB/T 10592-2008 high and low temperature test chamber technical conditions; 4.GB/T 10586-2006 damp heat test box technical conditions; 5.GB/T 5170.1-1995 General rules for the verification of basic parameters of environmental testing equipment for electric and electronic products 6.GB/T 5170.2-1996 Electrical and electronic products environmental testing equipment basic parameters verification method temperature test equipment 7.GB/T 5170.5-1996 Electrical and electronic products Environmental testing equipment Basic parameters verification method Damp heat test equipment 8.GB/T 5170.18-1996 Electrical and electronic products environmental testing equipment basic parameters verification method temperature / humidity combination cycle test equipment 9. GB/T 2421-1999 Environmental testing of electrical and electronic products - Part 1: General 10.GB/T 2422-1995 Environmental Test Terminology for Electrical and Electronic Products 11. GB/T 2423.1-2001 Environmental testing of electric and electronic products - Part 2: Test methods Test A: Low temperature (idt IEC 60068-2-1: 1990); 12. GB/T 2423.2-2001 Environmental testing of electric and electronic products - Part 2: Test methods Test B: High temperature (idt IEC 60068-2-2:1974); 13. GB/T 2423.3-2006 Environmental testing of electric and electronic products - Part 2: Test method test Cab: constant damp heat test (IEC 60068-2-78:2001, IDT); 14. GB/T 2423.34-2005 Environmental testing of electrical and electronic products - Part 2: Test method Test Z/AD: Temperature/humidity combination cycle test. (idt IEC 60068-2-38:1974); 15.GB/T 2423.4-1993 Basic Environmental Test Procedures for Electrical and Electronic Products Test Db: Alternating Damp Heat Test Method (eqv IEC 60068-2-30: 1980); 16.GB/T 2423.9-1989 Basic Environmental Test Procedures for Electrical and Electronic Products Test Cb: Constant Damp Heat Test Method for Equipment 17. GB/T 2424.1-2005 environmental testing of electrical and electronic products, high temperature and low temperature test guidelines (idt IEC 60068-3-1: 1974); 18. GB/T 2424.2-2005 Electrical and electronic products environmental test damp heat test guidelines (idt IEC 60068-3-4: 2001); 19. GB/T 2424.5-2006 Electrical and electronic products environmental test temperature test chamber performance confirmation (idt IEC 60068-3-5:2001); 20.GB/T 2424.6-2006 Environmental testing of electrical and electronic products temperature / humidity test chamber performance confirmation (idt IEC 60068-3-6:2001); 21.GB/T 2424.7-2006 Environmental testing of electrical and electronic products - Tests for temperature test chambers A and B (with load) (idt IEC 60068-3-7:2001); 22.GJB150-1-86 General Rules for Environmental Test Methods for Military Equipment 23.GJB150-3-86 Military equipment environmental test method high temperature test 24.GJB150-4-86 Military equipment environmental test method low temperature test 25.GJB150-9-86 Military equipment environmental test method damp heat test Hongzhan has a research institute specializing in the research and development of environmental test equipment. It has mature loop test development methods and laboratories, and gathers a group of outstanding talents and well-known experts in the industry. The strong R&D team leads the domestic loop test technology. Development direction. At present, the company has high and low temperature test chambers with independent intellectual property rights, high and low temperature wet heat test chambers, rapid temperature change test chambers, thermal shock test chambers, three comprehensive test chambers, high and low temperature low pressure test chambers, solar radiation test chambers. The climatic environment test equipment and customized products such as industrial ovens and walk-in high and low temperature damp heat test chambers and high wind speed rain test chambers are at the leading domestic level and international high standards.
Single Fabric Sofa is a recliner sofa with one seat. It's cover materials is fabric which is safe, green and environmentally friendly, comfortable cloth, made of wood frame and fine sponge, which brings people warm, comfortable and environmentally friendly family living environment.
Fabric sofa is not as stiff as solid wood sofa, you`ll feel very comfortable when you sit on it, and breathable performance of fabric sofa is good. The soft cloth is especially comfortable to touch, making people relax and feel the leisure.
Fabric sofa is suitable for small space, it makes more sofa designs and colors than leather sofa, and it`s warm in winter, and breathable in summer, new fabric sofa won't give out a pungent leather smell at the same time.
Fabric sofa gives a person a sense of leisure, and strong comfort, let a person have the feeling of relax when get home.
Single Fabric Sofa,Power Reclining Sofa Chair,Power Lift Massage Sofa,Home Massage Recliner Sofa Kaifeng Lanwei Smart Home Co., Ltd , https://www.sofa-recliner.com
Why do you want to do a damp heat test?