Center Certification & Testing International
Project Introduction
The scratch test is one of the commonly used standard methods for testing the bonding strength between the surface film and the base material. Use a material with a hardness greater than the surface film to make a sharp tip to scratch on the surface of the sample or workpiece. Add a load to the scratch head until the film and the substrate are out of contact. At this time, the load is the critical load, and the surface film and the surface film can be calculated. Bonding strength between substrates.
Application range
The scratch test is mainly used to detect and evaluate the anti-shear, scratch, planing, scratch and engraving properties of materials such as anodized materials, rigid organic materials, powder coatings, soft metals, plastics, glass and paint adhesives.
Method Standard
GB/T17657-1999, ISO4586-2, JISK6902, Federal series standard, Terrazzo90322-9E-1, UNI9428Furniture, AS/NZSAS2924.2, ASTMC217, CEN series standard, DIN53799, DIN68861-4
According to the \"Catalogue of the First Batch of Products Subject to Compulsory Product Certification\" announced No. 33 of 2001, hair dryers are classified under the subcategory of \"Skin and Hair Care Appliances\" in \"Household and Similar Electrical Appliances\", and fall within the scope of the CCC certification product catalogue. Since May 1, 2003, hair dryers that have not obtained the CCC certification certificate and have not been marked with the China Compulsory Certification Mark shall not be manufactured, imported or sold.
As a household appliance, when humidifiers are sold on e-commerce platforms such as JD.com, Tmall and Taobao, they must provide quality inspection reports that meet national standards to ensure quality and safety. According to the Chinese national standard GB4706 series, humidifiers must pass safety tests. The quality inspection report must prove that the product meets safety requirements to avoid causing harm to consumers during use. The quality inspection report provides consumers with a basis for purchase. After being tested by an independent third-party institution, it enhances consumers\' trust in the product. In terms of market access, some shopping malls, supermarkets or government procurement projects require quality inspection reports as proof of product qualification.
SRRC certification is one of the necessary conditions for products to enter the Chinese market for sale. It ensures that the wireless transmission characteristics of the wireless camera comply with national standards, avoiding communication problems caused by radio interference and ensuring the legality and compliance of the product.
The scratch test is one of the commonly used standard methods for testing the bonding strength between the surface film and the base material. Use a material with a hardness greater than the surface film to make a sharp tip to scratch on the surface of the sample or workpiece.
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