This standard specifies the technical requirements, test methods and acceptance rules for atomized CuSn10 bronze powder for powder metallurgy. This standard is applicable to pre-alloyed and partially pre-alloyed CuSn10 bronze powder. JB/T 7380-1994 Atomized CuSn10 bronze powder JB/T7380-1994 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T7380-94
Atomized CuSn10 Bronze Powder
Published on 1994-07-26
Ministry of Machinery Industry of the People's Republic of China
Implementation on 1995-07-01
Mechanical Industry Standard of the People's Republic of China
Atomized CuSn10 Bronze Powder
1 Subject Content and Scope of Application
JB/T7380-94
This standard specifies the technical requirements, test methods and acceptance rules for atomized CuSn10 bronze powder for powder metallurgy. This standard applies to pre-alloyed and partially pre-alloyed CuSn10 bronze powder. Reference standards
GB1479
GB1480
GB1481
GB1482
GB4164
GB5314
GB8002
Determination of bulk density of metal powders
Part 1: Funnel method
Determination of particle size composition of metal powders Dry sieving method Metal powders (excluding powders for cemented carbide) are subjected to uniaxial compression Determination of compressibility in the systemDetermination of the fluidity of metal powderStandard funnel method (Hall flowmeter)Determination of the content of oxygen that can be reduced by hydrogen in metal powderSampling method of powder for powder metallurgy
Chemical analysis method of tin bronze
Grade indication method
Technical requirements
Weight percentage of tin
Copper and tin alloys
Powder metallurgy materials
The chemical composition of FWCuSn10 powder shall comply with the provisions of Table 1. Table 1
The physical and technological properties of FWCuSn10 powder shall comply with the provisions of Table 2. Table 2
Bulk density
>3. 8~4. 4
Flowability
Approved by the Ministry of Machinery Industry on July 26, 1994
Compressibility
154~100
100~71
Implemented on July 1, 1995
JB/T738094
4.3The particle shape of FWCuSn10 powder should be irregular. 4.4The color of FWCuSn10 powder (after reduction) should be orange-yellow. There should be no moisture, agglomeration, rust, inclusions, etc. 5 Test method
The sampling method for the determination of chemical composition and physical process properties of FWCuSn10 powder shall be carried out in accordance with GB5314. 5.1
5.2 The determination of copper and tin contents in the chemical composition of FWCuSn10 powder shall be carried out in accordance with GB8002. 5.3 The determination of oxygen content in the chemical composition of FWCuSn10 powder shall be carried out in accordance with GB4164 (the oxygen reduction temperature is specified as 700±15°C). The determination of bulk density of FWCuSn10 powder shall be carried out in accordance with GB1479. 5.41
The determination of particle size composition of FWCuSn10 powder shall be carried out in accordance with GB1480. 5.5
The determination of compressibility of FWCuSn10 powder shall be carried out in accordance with GB1481, and the pressing pressure shall be specified as 392MPa. 5.6bzxz.net
The determination of fluidity of FWCuSn10 powder shall be carried out in accordance with GB1482. 5.7
The particle shape of FWCuSn10 powder shall be inspected by microscope, and the appearance shall be inspected by visual inspection. 5.8
6 Inspection rules
6.1 The quality inspection of the product shall be carried out by the quality inspection department of the manufacturer, and a quality report shall be issued. 6.2 If the inspection result does not meet the requirements of this standard, double the number of samples of the unqualified items shall be taken for re-inspection according to the provisions of the test method. If it still does not meet the requirements of this standard, the batch of products shall be unqualified. 6.3 The shelf life of the product is six months from the date of leaving the factory (the shelf life of oxygen content is two months). The supplier is not responsible for any quality problems caused by the buyer's failure to keep the product.
6.4 If arbitration is required for quality issues, the supplier and the buyer shall jointly take samples at the buyer's side, but the buyer must provide the original powder. 7 Marking, packaging, transportation, storage
Products should have the following markings when leaving the factory:
Product standard code;
Product name:
Product brand;
Product batch number;
Net weight, kg:
Waterproof and moisture-proof;
Manufacturer name:
Product date of leaving the factory.
7.2 Products should be tightly sealed when leaving the factory, and the packaging should be firm and reliable to ensure that they will not be damaged or damp under normal circumstances. The product certificate should be attached to the packaging.
7.3 The mode of transportation shall be agreed upon by the supply and demand parties. The product shall not leak or be damp during transportation. 7.4 The product should be stored in a dry place and should be moisture-proof and sun-proof. Additional remarks:
This standard is proposed and managed by the Beijing Powder Metallurgy Research Institute. This standard is drafted by Beijing Nonferrous Metal Powder Factory. The main drafters of this standard are Yu En, Bao Xinguo and He Wei. 2
People's Republic of China
Mechanical Industry Standard
Atomized CuSn10 Bronze Powder
JB/T7380-94
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Postal Code 100081
(P.O. Box 8144, Beijing
No Reproduction
Copyright reserved
Format 880×12301/16 Printing Sheet 3/8 Number of Words 4,000 First Printing in May 1995
First Edition in May 1995
Price 3.00 Yuan
Print 00.001-500
No. 94-158
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