This standard specifies the technical requirements, inspection rules, marking and packaging of connecting rod bolts for internal combustion engines. JB/T 8416-1996 Technical requirements for connecting rod bolts for internal combustion engines JB/T8416-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8416-96
Internal Combustion Engine Connecting Rod Bolts
Published on September 3, 1996
Technical Conditions
Implementation on July 1, 1997
Ministry of Machinery Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Internal Combustion Engine Connecting Rod Bolts
Technical ConditionswwW.bzxz.Net
1 Subject Content and Applicable Scope
This standard specifies the technical requirements, inspection rules, marking and packaging of connecting rod bolts for internal combustion engines.
This standard is applicable to piston type internal connecting rod with diameter less than 20mm (hereinafter referred to as simplified standard) 2 Reference standards
Fastener inspection, marking and packaging
General shape tolerance and combination (1-5mm in diameter) LH/T1C:3
Table roughness and its value
CB1184
Definition of shape and position tolerance: H3C98.1 (1988) Fastener machine performance bolts, screws and studs G03.1 (1988) Fasteners official bolts, screws and studs N3os
NJ sIG
3 Technical requirements
Internal combustion engine connecting rod specification and inspection standard
Technical conditions for magnetic particle detection of connecting rods
3.1 The product quality must meet the requirements of this standard and be manufactured through the specified product selection procedures and technical documents. 3.2 The heat treatment of connecting rod materials shall meet the requirements of GR398.=Table 2
3.3 The mechanical properties of the screw shall meet the requirements of G3098.1, and the performance rating shall be equal to or higher than %.6. The difference between the screw quality and the minimum speed rating after heat treatment shall be less than 31. There is no change in the unit of measurement. 3.5 The inspection will be evaluated through the section control plan. 3.6 The remaining process shall be inspected by magnetic detection in accordance with the provisions of I31(. 3.7 The floating effect of the source control adopts fine-tooth ordinary explosion effect, which is specified in G197. 3.8 The position tolerance of the internal ring of the space shall comply with the following specifications: a.
The verticality of the axis of the matching surface of the bolt rod part to the verticality of the axis of the matching surface of the bolt rod part, or the verticality of the head of the screw bearing to the screw thread line shall be in accordance with Class 10 of Appendix 3 of GB1184. The verticality of the axis of the matching surface of the rod part to the axis of the screw effect, or the verticality of the head of the screw bearing to the screw thread line shall be in accordance with Class 10 of Appendix 3 of GB1184. The bolts of the standard body are connected with the same degree of threading axis as shown in Table 4: Grade 1:
d, the symmetry of the pin hole and the special axis is GB11B Appendix 4 12, 3.9 The surface depth R of the selected parts, the reliability G11 standard: the original table is 1.um
The matching surface of the head is Rc.8gm
The head is 3.1:
Approved by the Ministry of Machinery Industry on September 3, 1996
July 1, 1997
To the natural, 1. 6 m;
The small appointment is s0um
JB/T 8416--96
3, the course inspection ten parts, the threaded part and the six parts are not full of flying equipment, and the traces of rust and other travel records are recorded in the normal person's record, the micro-end two teeth are allowed to be full of small forbidden secrets. 3 inspection clothing should be inspected by other medical departments.
3.12 Inspection requirements B1C3.1 frequency
inspection rules
4.1 cumulative inspection should be made, once seen by the inspection department 4.2 After the factory inspection, the product is strictly tested and the quality is effective. 5. The marking and packaging are in accordance with the international number of GB. Additional instructions: The national internal combustion engine internationalization technology committee only asks the internal combustion engine industry product to fill the repair qualification certificate of the internal combustion engine industry product. This is the first time for the selection of technical replacement parts.
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