This standard specifies the technical requirements, inspection methods, acceptance rules, storage, packaging, custody and marking of copper balls for carburetors. This standard applies to copper balls for carburetors for gasoline engines. JB/T 6026-1992 Copper balls for carburetors JB/T6026-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6026-1992
Carburetor Passage Plug
Published on May 28, 1992
Implemented on January 1, 1993
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Carburetor Passage Plug
Subject Content and Scope of Application
JB/T6026-1992
This standard specifies the technical requirements, inspection methods, acceptance rules, purchase, storage, packaging, custody and marking of copper balls for carburetor passage plugs (hereinafter referred to as copper balls).
This standard applies to copper balls for carburetor passage plugs for gasoline engines. 2
Reference standard
GB2828
3Technical requirements
Batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection)Material: H62, H65 brass or HPb59-1 lead brass. The technical conditions, varieties and specifications of the profiles shall be determined by the copper ball manufacturer. 3.1
3.2Basic size: 10 types of diameters such as 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6mm. 3.3Dimensional deviations are shown in Table 1.
Basic size
Roundness tolerance value is 0.01mm.
Surface roughness parameter R. value is 1.6um.
Dimensional deviation
3.6 The surface shall be passivated, and the appearance shall be smooth and round, without any defects such as bumps, cracks, indentations, defects, rust, pollution, etc. 3.7
The hardness shall not be less than 60HB.
The weight of each copper ball shall comply with the provisions of Table 2. Table 2
Weight of Thousands
4 Inspection Method
119~126
190~200
283~298
403~425
553~583
736~775
956~1007
The basic size, dimensional deviation and roundness tolerance shall be inspected with an indicating micrometer or a special inspection fixture, and each copper ball shall be inspected in more than 3 directions. Approved by the Ministry of Machinery and Electronics Industry on May 28, 1992 and implemented on January 1, 1993
JB/T6026-1992
4.2 Surface roughness and appearance quality shall be inspected by visual comparison with the sample block, or by special inspection tools. 4.3 Hardness shall be inspected by a hardness tester. bZxz.net
Weight shall be measured by a balance.
Acceptance rules
According to the normal sampling plan and general inspection level I in GB2828, the classification of non-conforming products and AQL values ​​shall be in accordance with the provisions of Table 3. Table 3
Classification of non-conforming items
6 Marking
Marking method
JB/T6062
Marking example
Dimension deviation
Appearance quality
Roundness tolerance
Surface roughness
Weight per thousand
Diameter size
Code of this standard
Copper ball with a diameter of 2.5 mm and a material of H62: JB/T6062-2.5-H62 Copper ball with a diameter of 6.0 mm and a material of HPb59-1: JB/T6062-6.0-HPb59-17
Packaging and storage
AQL value
The packaging should have moisture-proof and rust-proof measures, and the material, specification, quantity, weight and implementation standard code should be indicated on the outer surface of the packaging. The weight of each box shall not exceed 2kg.
7.2 It should be stored in a well-ventilated, dry, covered warehouse without corrosive gas or liquid. Additional remarks:
This standard was proposed and managed by Tianjin Internal Combustion Engine Research Institute. This standard was drafted by Tianjin Internal Combustion Engine Research Institute. The main drafter of this standard is Zhong Maosheng.
People's Republic of China
Mechanical Industry Standard
Carburetor Passage Plug Copper Ball
JB/T 6026 - 1992
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Format 880×1230
Print Sheet 3/8
Word Count 4,000
First Edition in October 1992
First Printing in October 1992
Print Quantity 1-500
Price 1.20 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn261 - 9209 /
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