In order to ensure the effective implementation of the compulsory product certification system, the China Quality Certification Center (CQC) is based on the Technical Resolution of the TC 05 Lighting Electrical Technology Expert Group on the Implementation Requirements of the GB/T17743-2017 Standard (TC05-2018- 04), the relevant requirements for implementing the new version of the standard are as follows: Recently, the China Quality Certification Center stated that the compulsory certification of lighting electrical appliances (10 lighting equipment) is based on the standard GB/T 17743-2017 "Radio disturbance of electrical lighting and similar equipment". The limit and measurement method of the characteristics (hereinafter referred to as the new version of the standard), was released on December 29, 2017, will be implemented from July 1, 2018, instead of GB/T17743-2007 (hereinafter referred to as the old standard). In order to ensure the effective implementation of the compulsory product certification system, the China Quality Certification Center (CQC) is based on the Technical Resolution of the TC 05 Lighting Electrical Technology Expert Group on the Implementation Requirements of the GB/T17743-2017 Standard (TC05-2018- 04), the relevant requirements for implementing the new version of the standard are as follows: 1. The standard GB/T 17743-2017 replaces the standard GB/T 17743-2007 from the date of implementation; 2. The standard GB/T 17743-2017 and GB/T The specific differences of 17743-2007 are shown in the annex, and the relevant certificates are converted in the process of compulsory product certification. From the date of issuance of this notice, when the following conditions are met: (1) a new application requiring full project testing; or (2) a change request involving differential project testing; electromagnetic compatibility testing shall be carried out in accordance with GB/T 17743-2017 And issued a certificate of certification. 3. For applications that use existing certification results to expand, the certification client may voluntarily choose to renew the certification according to the old standard (GB/T 17743-2007) or issue the test according to the new standard (GB/T 17743-2017). Certificate of certification. 4. The follow-up inspection after the certificate is implemented according to the standard version listed in the valid CCC certificate. 5. The requirements for the implementation of the compulsory certification of the lighting appliances (10 lighting equipment) to implement the new edition of the standard in this announcement do not exempt the relevant products from complying with the relevant provisions of the Standardization Law of the People's Republic of China. 6. All relevant designated laboratories shall report to the Certification and Supervision Department of the National Certification and Accreditation Administration and our center as soon as possible the status of the new standard testing capability, and shall promptly report the status of the certification and approval of the new standard laboratory qualifications.
Mixed Powder
Tungsten carbide mixed Metal Alloy Powder is commonly used in PTA (Plasma Transferred Arc) welding. PTA welding is a process that involves the deposition of a hardfacing material onto a base metal to provide wear resistance, corrosion resistance, and improved mechanical properties.
Tungsten carbide is a very hard and wear-resistant material, making it ideal for applications where high abrasion resistance is required. It is often mixed with other metals, such as nickel, cobalt, or chromium, to form a metal alloy powder. These metal alloys enhance the properties of the tungsten carbide and improve its compatibility with the base metal.
The tungsten carbide mix metal alloy powder is typically fed into the PTA welding torch, where it is melted and propelled onto the surface of the base metal using a high-energy plasma arc. The molten powder forms a hard, dense coating that bonds with the base metal, providing excellent wear resistance and protection.
The specific composition of the tungsten carbide mix metal alloy powder can vary depending on the application requirements. Different ratios of tungsten carbide and other metals can be used to achieve desired properties, such as hardness, toughness, and corrosion resistance.
Overall, tungsten carbide mix metal alloy powder is a versatile and effective material for PTA welding, offering superior wear resistance and protection for various industrial applications.
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