JB/T 10149-1999 This standard was formulated with reference to the German DIN 6349-1978 Part 5 "Technical Requirements for Spanner-Clamped Three-Jaw Drill Chucks" in terms of materials and torque. This standard specifies the requirements, sampling, test methods, marking, packaging and transportation of sintered steel nuts and gear rings for drill chucks. This standard applies to nuts and gear rings made of sintered steel on drill chucks. This standard is published for the first time. JB/T 10149-1999 Technical Requirements for Sintered Steel Nuts and Gear Rings for Drill Chucks JB/T10149-1999 Standard Download Decompression Password: www.bzxz.net

ICS 25. 060. 20
Machinery Industry Standard of the People's Republic of China
JB/T101491999
Sintered steel nuts and gear rings for drill chucks
Technical conditions
1999-10-08 Issued
State Machinery Industry Bureau
200-0-03-01 Implementation
JB/T10149-1999
: The small standard sheet is formulated according to user requirements. When formulating, in the material and torque part, the German DIN6349T5-1978 was adopted. The main difference between this standard and DIN6349T5 is: the gear ring cutting, in DIN6349T5, it is stipulated that "high-quality steel, steel or other materials should be used", while the standard stipulates that the gear ring should be made of sintered steel:
The heat treatment of the gear ring is stipulated in DJN6349T5 when the quenching and tempering treatment is performed. The hardness of carbon steel or sintered steel is [650±S0] HV10. This standard stipulates that the hardness of sintered steel after treatment shall not be less than 35HRC: This standard is based on the requirements of GB/T6087-1993 wrench pin chuck, and adds S (i.e. the modulus is 0.9) technical requirements. This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is issued by Yantai Machine Tool Land Research Institute. The responsible drafting unit of this standard is Xingcheng Powder Metallurgy Co., Ltd. This standard Participating units: Institute of Metallurgy, Chinese Academy of Sciences, Northeastern University, General Administration of Machine Tool Accessories. The main contributors of this standard: Gao Yang, Ning Lianxiao, Wang Chonglin, He Fengming, Zhang Qiquan, 1 Fan Jun
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Sintered Steel Nuts and Gear Rings for Drill Chucks
JAT10149-1999
This standard specifies the sintered steel nuts and gears for drill chucks (hereinafter referred to as nuts and gears) ) requirements, polishing, test methods, marking, packaging and transportation:
This standard is used for nuts and teeth made of burnt drill steel on drill chucks. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the specified temporary specifications were valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB231—99
GR.T SI63—1985
B5957—1986
GBT 6087-·1993
CB/T 6804198h
GB/T9097.11988
JB/[2798—198]
IB/T 3207—1991
E8063.1--8063.8—1996
3 Requirements
Test method for silica content of metal
Determination of density of sintered alloy materials
Sampling of sintered alloy materials (excluding hard alloys) wrench drill chuck
Determination of radial normal collapse strength of sintered metal materials (excluding hard alloys) by force method Part 1: Materials with basically uniform cross-sectional hardness
Metallurgical standards for sintered powder metallurgy products General technical conditions for product packaging Chemical analysis of powder metallurgy materials and products All parameters should comply with the provisions of Appendix A of GB/T6087—1993. 3. 1
3,2 Nuts, tooth spacing material is sintered steel, the main chemical composition, performance and enterprise organization of the product in the state of preparation shall comply with the specifications of Table 1! Main chemical composition and mechanical properties
Carbon
Density, mit
Degree of application
180-220 Www.bzxZ.net
Radial low sliding strength is good. i!
【Steel + bainite! Less than 30%, high yield: large %, no mass mesh nut, tooth waist heat treatment piece required by the regulations, thinness is not less than 35HRC. 3.3
Approved by the State Machinery Industry Bureau in January 1999
Implemented in March 1, 2000
JB/T·10149—1999
3.4 ​​After being processed, the screw and gear ring should meet the assembly process requirements, and the axis of the opened hole should not be disconnected, and there should be no plastic deformation. After the nut and gear are matched, they should be clamped and tested according to the requirements of Table 2. The nut and gear ring shall not be deformed or broken. 3.5
Table 2 Tightening torque
Tooth module
Tightening torque N·:11
3.6 The nut and ring gear are free of cracks, inclusions and oxidation, and have no burrs, scratches, 4 Sampling
4. The two modified sampling pieces of 3.2.2 of the screw and gear inspection form GR 5957·196 shall be taken directly from the submitted batch. 4.2 Geometric accuracy requirements, inspection sampling quantity and qualified level AQL value shall be determined by the relevant departments in the joint evaluation. 4.3 Mechanical properties, physical properties and chemical composition shall be in accordance with the following provisions:! For heat treatment iodine degree, the effective quantity is 10-2 pieces, and the qualified rate is 100%b. For drop value and density test, the effective quantity is 10~20 pieces, and the qualified rate is 90%c). For apparent hardness, the effective quantity is 20~40 pieces, and the qualified rate is 90%d). For chemical combination, the effective quantity of metallographic group material is checked from 5 to 10 pieces, and the qualified rate is 100%. When there is any dispute about the heat treatment, the chemical combination carbon and metallographic structure are checked. 5 Test methods
5.1 Rockwell hardness number GR/R230 is measured.
5.2 Density is measured according to GB/T5E63.
5.3 Strength is measured according to GB/T6B04.
5.1 Hardness is measured according to GB/T 9097.1.
5.5 Metal composition is measured according to J9T2798.
5.6 Chemical composition is measured according to JB/T8063.2-8063.8. 5. As shown in Figure 1, fix the gear and apply the torque specified in Table 2 by pressing the wheel pair with a torque gauge. The total torque shall comply with the provisions of Table 3. 6. Marking, packaging and storage. 1 Brr10149-1999 Figure 1 Gear torque test. The torque should be tested at the appropriate protective measures. The product name, model, number, manufacturer name, trademark and port number should be marked on the packaging box. 6.1 The packaging should comply with the relevant provisions of B Section 320. t.2 6.3 The products should be stored in the warehouse of the vehicle for a period of time not exceeding six months from the date of shipment, and the test mark should be displayed on the shipped goods.
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