JB/T 9132-1999 JB/T 9132-1999 Technical conditions for sintered iron-phosphorus soft magnetic materials JB/T9132-1999 Standard download decompression password: www.bzxz.net

ICS77.160
Machinery Industry Standard of the People's Republic of China
JB/T9132—1999
Sintered ferrophosphor soft magnetic materials
Technical conditions
Specifications for sintered ferrophosphor soft magnetic materialsPublished on August 6, 1999
National Bureau of Machinery Industry
Implementation on January 1, 2000
JB/T9132-1999
This standard is a revision of ZBH72001—87 "Technical conditions for sintered ferrophosphor soft magnetic materials". During the revision, the original standard was edited and the main technical content remained unchanged. This standard replaces ZBH72001-87 from the date of implementation. Appendix A of this standard is a prompt appendix.
This standard is proposed and managed by the Technical Committee for Standardization of Powder Metallurgy Products. The main drafting unit of this standard is Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Yin Hongyu, Hao Ying and Cao Baoxing. This standard was first issued on May 22, 1987. Machinery Industry Standard of the People's Republic of China
Sintered ferrophosphor soft magnetic materials
Technical conditions
Specifications for sintered ferrophosphor softmagneticmaterials1Scope
JB/T9132—1999
Replaces ZBH72001—87
This standard specifies the chemical composition, magnetic properties, physical properties and inspection and acceptance methods of sintered ferrophosphor soft magnetic materials. This standard is applicable to sintered ferrophosphor soft magnetic materials (hereinafter referred to as materials) used for manufacturing magnetic pole components in electrical appliances, motors and instruments.2Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are all valid. All standards are subject to revision and parties using this standard should investigate the possibility of using the most recent versions of the following standards. GB/T223.1—1981
GB/T223.7—1981
GB/T3656—1983
GB/T4309—1984
GB/T5163—1985
JB/T7905—1999
3 Technical requirements
Determination of carbon content in steel and alloy
Determination of iron content in alloy and iron powder
Method for measuring magnetic properties of pure iron for electrical use
Classification and designation of powder metallurgy materials Permeable sintered metal materials—Determination of density Sintered metal materials (excluding cemented carbide)—Sampling 3.1 Material grades and chemical composition
The materials are made of reduced iron powder or atomized iron powder and ferrophosphorus alloy powder by powder metallurgy. It is divided into three grades according to different sintering density levels. The density and chemical composition of each grade should comply with the requirements of Table 1. Table 1
F7402-U
F7402-V
F7402-W
3.2 Material brand marking method
Material chemical composition
Material is represented by F7402 according to the provisions of GB/T4309, and the symbols "U", "V\", "W" are added at the end to indicate the sintering density grade of the material.
Example:
Approved by the State Machinery Industry Bureau on August 6, 1999 and implemented on January 1, 2000
3.3 Magnetic properties
The magnetic properties of the material shall comply with the provisions of Table 2. Magnetic induction intensity
F7402-U
F7402-V
F7402-W
≥13000||t t||≥14.000
≥15.000
The physical properties of the parts shall be subject to the agreement between the supplier and the buyer. 3.5 The dimensions of the parts shall comply with the requirements of the order drawing. JB/T9132—1999
Sintering density shall not be less than 7.0g/cm
Iron-phosphorus alloy
Soft magnetic alloy
Magnetic material
Powder metallurgy
Maximum magnetic permeability
3.6 There shall be no other surface cracks on the surface of the parts, and the quality shall be subject to the agreement between the supplier and the buyer. 4 Test method
Coercive force
≤200
≤160
≤120
4.1 The determination of carbon in the chemical composition of the material shall be in accordance with the provisions of GB/T223.1. The determination of iron shall be in accordance with GB/T22 3.7. 4.2 The density of the material shall be determined in accordance with the provisions of GB/T5163. Oe
4.3 The three magnetic properties tests of the material, namely the magnetic induction intensity (B40), coercive force (Hc) and maximum magnetic permeability (Hmax), shall be in accordance with the provisions of GB/T3656.
4.4 The test rings for the magnetic properties test of the material shall be made from the same batch of powder as the parts and under the same process conditions. Three test rings shall be taken from each batch. If one of the test results fails, double the sampling shall be used to test the performance of that item: if there is another failure, the batch of materials shall be considered unqualified. 5 Delivery and Acceptance
5.1 The parts shall be submitted for inspection and acceptance in batches.
5.2 Each batch consists of parts made from the same batch of raw materials and under the same process conditions. 5.3 The magnetic properties of the materials manufactured according to the grades specified in Table 1 shall be The magnetic properties of the products shall comply with the provisions of Table 2. The acceptance of the magnetic properties of the products can also be agreed upon by both parties. 5.4 The density, appearance quality and size of the products shall be sampled in accordance with the provisions of JB/T7905. The density acceptance method allows both parties to agree. 2
Marking, packaging, transportation and storage
JB/T9132—1999
6.1 The products should be cleaned and kept clean before packaging. 2 The product certificate of the manufacturer should be in the packaging box. 6.2
3 The outside of the packaging box should be marked with:
a) Name and address of the manufacturer
b) Product name, model and quantity;
c) Packing date, net weight and gross weight;
d) Shipping address and name of the receiving unit;
e) "Do not get wet" should be written.
6.4 Storage: The products should be stored in the original packaging in a warehouse with a relative humidity not exceeding 85%. 3
JB/T9132-1999
【Reminder】
Physical and mechanical properties of sintered iron phosphorus
Physical and mechanical properties of sintered iron phosphorus are shown in Table A1. Table A1
Material grade
F7402-U
F7402-V
F7402-W
Carbon content
Phosphorus content
Tensile strength
≥250
Impact toughness
(unnotched specimen)
Apparent hardness
People's Republic of China
Mechanical industry standard
Technical conditions for sintered iron-phosphorus soft magnetic materials
JB/T9132-1999
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
Format 880×1230
First edition in March 2000
Print run 1-500
Postal code 100044)
Printing sheet 1/2
Word count 10,000
First printing in March 2000
Price 5.00 yuan
Serial number 99-1190www.bzxz.net
Mechanical Industry Standard Service Network: 66
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