This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of welding hammers. This standard applies to welding hammers used to remove welding slag during electric welding operations. QB/T 1290.7-1991 Steel Hammer Welding Hammer QB/T1290.7-1991 Standard download decompression password: www.bzxz.net

Light Industry Industry Standard of the People's Republic of China
Steel Hammer Welding Hammer
Subject Content and Applicable Model
QB/T1290.7
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of welder hammers. This standard applies to welder hammers used to remove welding slag during electric welding operations. 2 Reference Standards
GB/T5305 Packaging, marking, transportation and storage of hand tools GB/T13473 General Technical Conditions for Steel Hammers
3 Product Classification
3.1 Type
The types of welder hammers are shown in Figures 1, 2 and 3. Figure 1 Type A welding hammer
Approved by the Ministry of Light Industry of the People's Republic of China on October 17, 1991 and implemented on June 1, 1992
3.2 Product marking
QB/T1290.7--1991
Figure 2 Type B welding hammer
Figure 3 Type C welding hammer
The marking of the welding hammer consists of the product name, model code and standard number. Marking example: welding hammer AQB/T1290.7
4 Technical requirements
4.1 Heat treatment requirements
The heat treatment requirements of the hammer body of the welding hammer shall comply with the following provisions. 4.1.1 The heat treatment hardness of both ends of the hammer body is HRC50~~58. 4.1.2 The heat treatment length of the tip of the hammer body shall not be less than 8mm. 4.2 Connection strength
QB/T 1290.7—1991
The hammer body of the welding hammer should be firmly connected to the hammer handle, and should not be loose or pulled off when subjected to a tensile force of 2000N. 4.3 Other requirements
Other technical requirements for welding hammers shall comply with the provisions of Chapter 4 of GB/T13473. 5 Test methods
The test methods for welding hammers shall comply with the provisions of Chapter 5 of GB/T13473. 6 Inspection rules
The inspection rules for welding chains shall comply with the provisions of Chapter 6 of GB/T13473 7 Marking, packaging, transportation, storageWww.bzxZ.net
The marking, packaging, transportation and storage of welding hammers shall comply with the provisions of GB/T5305. Additional remarks:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. This standard was drafted by the Steel Industry Standard Drafting Working Group. The main drafters of this standard are Lin Meide, Jing Guofan, Liu Yongbao, and Chi Renheng.
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