QB/T 1540-2005 Brass wire for clocks

This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of brass wire for clocks (hereinafter referred to as "brass wire"). This standard is applicable to the brass wire used in the manufacture of clock parts, and can also be used as a reference in the daily machinery industry such as instruments and meters. QB/T 1540-2005 Brass wire for clocks QB/T1540-2005 Standard download decompression password: www.bzxz.net

ICS39.040
Classification number: Y11
Registration number: 163962005Www.bzxZ.net
Light Industry Standard of the People's Republic of China
QB/T 1540-2005
Replaces O/5401992
Brass wire for clocks
Bris swllcstocksforclocks
Published on July 26, 2005
Implemented on January 1, 2006 by the National Development and Reform Commission of the People's Republic of China
This standard is a revision of QB/T1540-1992 Brass wire for clocks. The main technical differences between this standard and QB/T1540-1992 are as follows: 1. The expression of general terms is cancelled:
2. The expression method of classification, specification and rare record is standardized, and the unusual specification size (3.2) is cancelled: - The requirement for "residual stress" is added (4.1). This standard is proposed by the China Automobile Industry Federation and is drafted by the National Clock and Watch Standardization Center. The previous standard was drafted by the Light Industry Clock and Watch Research Institute. The main super drafters of the standard are: Figure Chu Chong and Yang Jian. The previous versions of the standards replaced by this standard are as follows. QB877-1983
QB/T154-2005
From the implementation of this standard, it replaces the light industry standard QBT1540-1992 issued by the former Ministry of Light Industry. Scope of the standard industry information free download
Bronze wire for bell
QB/T1540-2005
This standard specifies the classification, requirements, test methods, verification rules and marks of brass wire (hereinafter referred to as "brass wire"). 2 Normative reference documents
The items in the following documents become the items of this standard through reference in this standard. All For non-dated referenced documents, all revisions (excluding errata) or revisions to this standard are applicable. However, the parties may study whether the latest versions of these documents can be applied after reaching an agreement based on this standard. For undated referenced documents, the latest versions shall apply to the production standards GB/T228 Metal materials - Test methods for tensile parts at room temperature GRT4340.1 Hardness test at room temperature Part 1: Test method GB:T5121.) Copper and alloy steel - Determination of the content of steel BT8888: Packaging, marking, transportation and storage of non-ferrous metal processing products (T10567! Chemical alloy materials - Test method for residual stress reduction - Acid test method G10610 Product geometry technical specification - Rules for evaluating the structure of the product 3 Classification, specification and marking
3.1 Classification
3.1.1 Classification by brand
3. 1.2 Classification by state
-Extra hard
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