This standard specifies the technical requirements, inspection rules and marking, packaging, transportation and storage of gears such as timing shafts, camshafts and valve and oil supply mechanisms of internal combustion engines. This standard applies to timing gears of reciprocating piston internal combustion engines with a cylinder diameter of less than or equal to 200mm. JB/T 8415-1996 Technical conditions for timing gears of internal combustion engines JB/T8415-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T841596
Internal Combustion Engine Timing Gear
1996-09-03 Issued
Technical Conditions
1997-07-01 Implementation
Ministry of Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Internal Combustion Engine Timing Gear
1 Title Content and Applicable Specifications
JB/T 641596
This standard sets out the technical requirements for gas transmission gears (hereinafter referred to as timing gears), the packaging method and the age of this product.
The standard is applicable to gas transmission gears of the type 2000 or above, 2 Reference Standards
GEiCU5
t 1348
GB 2RSwww.bzxz.net
GH7215
GH13O55
Z tGg
2336 91c
ZH IC4 301
1 Technical Department Request
But the installation parts are marked
High-quality fuel fiber steel technical conditions
Flat paint key pin shoot to the appropriate size
Shape natural agent position stomach Deng Ying has not been noted
Ball must be connected step by step
Batch by batch inspection plan exciting shoot this season sequence and extraction details (road month to reach the full batch of release) Taiwan metal control saw technical strip shop
Gray iron will support
Washing parts
Ball shape holding metallographic flow
Gradually can medical wheel special
Sales Renping large enterprises and insurance
Light body ball science wash and other parts The fire control cabinet should be tested by the automobile repair and injection gear society. The carbon gear must be clean and metallographically inspected. 3.1 The product should be in accordance with the standard and the approved product drawing and supporting documents. 3.2 3.2.13 The quality of the wheel: the stock adopts the 35.45 generation of carbon structure specified in B9, the uniformity of the GK3577, the 10Cr1rM.3trM5.38MnA1rMu and other gold-containing agents. 3.2.2 The timing wheel is in accordance with the length of the whole material. The Q60-5 of GB1 is used to maintain the decision or use 9239 to achieve the expansion or 3.2.3 The material of the block that can be higher than HT20C can be GB30? 20trMnT, etc. Alloy structural steel, 3.3 Information
3.3.1 Information of the following paragraphs is 14-1[1B5. 3.3.2 The hardness standard of the lock is 229-3021. Approved by the Ministry of Industry on September 3, 1996
Implemented on July 1, 1997
3.33 Special 1-lift gear theory E fire hardness
a.35.2h commission becomes [*2-21HBS
JR/T84 15
b, 2MT. The hardness is 156-217HS
40, 85CrW, 12CrMo, 6CrMoAl hardness is 17@--2:1IBS; d.15℃rM钧, you read the layer depth G.8--1.mr, so the timing gun test quality is 56--65HRC, it is more 26~31T1R
3.3. It is necessary to choose steel timing gear surface. The hardness should be larger or equal to 40HRC: 3.3./shift, carbon micro-composite rate heat reduction timing gun surface limit is 68~e4HRC. Its core hardness is 33-48HRC. 3.3.7, the induction gear teeth should be harder than the following 2TIRC4 metal quality || tt || 3.4.1 GH72 wheel specifications, 3.4.2 cast iron microstructure should meet the requirements of (I044-3.4.3 virtual fire steel microstructure should meet the requirements of 300 hardness 3.4.4 table of fire metal microstructure enterprises. should meet the requirements of 23101C01. 3.4.5 micro-metal microstructure should meet the requirements of Q29018. Beijing dimension 1 product figure is now, 3.4.6 spheroidal graphite metal microstructure material for induction fire metal products meet the requirements of 2BI351U. 3 . Ken bad processing system
certificate issued difference to 12354 table 1 of the current provisions
3.6 step wheel Jing letter
3.6.1 West Yan three tolerances of the simple version of the same version is not less than the heart B [05 plan music - grade 3.6.2 ancient wheel product sample on the loss of 15 system wash wheel wheel medicine grade and limit section Dan chemical number or environment value,
3.6.3 with three public extraction group of wheel deep difference test items day one world changed to 5,., the formula of the remaining difference items month county Taiwan harm to test by T! White or by the Hong Yu two parties negotiated, grinding gear shop increased test items, 37 rush added T requirements
3.7.1 timing gear joint should be used 1 5. The chain connection is as follows: 3.7.2 The chain symmetry is specified in Table 1 of 118. 3.8 The length of the chain should be marked with the letter "year" as the mark. The uniformity limit of the chain between the center of the keying center or the center line of the fixed pin is 2. The size of the mark is determined by the "product diagram". 3.9 The main work of the timing flower is the thick chain
391 surface 1.e I step R.3.8um
3.9.2 Inner hole surface R1.6m
3.9. Installation end surface, 1.6m
3.10 External music
3. 10.1 The teeth of steel gears shall be smooth and free from defects such as rust, sharp edges, flying marks, dents and bumps.
Cast iron gears shall not be loose, cracked, or have defects such as holes, blowholes, etc. 3.10.3
310.4 The gear teeth shall not be cast without any defects such as the core, the product specifications shall be in accordance with the specifications, 3.10.5 The inner surface of the gear shall be made of a standard pattern and the bottom surface shall be painted. 3.10.6 The working mark of the gear teeth shall be clear and bright. 3.1 Warranty period
JE/1 8415-96
In compliance with the instructions for use of the internal combustion engine, the installation is specified in the manual, and the operation is guaranteed before use. The internal feeling is less than 20 hours from the date of receipt. If the gear manufacturing quality is not good or the surface is small, it can be replaced.
4 Inspection rules
4.! The timing gear product is old, and the air production inspection department can use the card surface or the normal picture to match the card surface. The center of the gear can be cut by 1/2 method! . The inner 2/S gear and the pull are not long. The carbon surface is not tight. The other parts of the product are repaired. The 43 key size is combined with the standard room inspection. If the conditions are not met, a single inspection is also required. 4.4 The inspection items for the tooth grabbing degree are as follows: 4.5 The inspection items for the tooth grabbing degree are as follows: 5.1 The inspection items for the tooth grabbing degree are as follows: 5.2 The inspection items for the tooth grabbing degree are as follows: 6.3 The inspection items for the tooth grabbing degree are as follows: 7.4 The inspection items for the tooth grabbing degree are as follows: 8.5 The inspection items for the tooth grabbing degree are as follows: 9.5 The inspection items for the tooth grabbing degree are as follows: 10.6 The inspection items for the tooth grabbing degree are as follows: 11.7 The inspection items for the tooth grabbing degree are as follows: 12.8 The inspection items for the tooth grabbing degree are as follows: 13.9 The inspection items for the tooth grabbing degree are as follows: 14.1 The inspection items for the tooth grabbing degree are as follows: 15.1 The inspection items for the tooth grabbing degree are as follows: 16.1 The inspection items for the tooth grabbing degree are as follows: 17.1 The inspection items for the tooth grabbing degree are as follows: 18.1 The inspection items for the tooth grabbing degree are as follows: 19.1 The inspection items for the tooth grabbing degree are as follows: 20.1 5.2 The gear parts are installed on the front road source courtyard, and the processing is done at the post. The material is not required for the product, and the product needs to be installed in the fourth degree. 5.3 The outer box should be marked with:
, "factory name:
product name model:
required quantity: kxl
packaging export period: years.
5.4 Each packaging box should have a production certificate signed by the technical inspection department! Inspection product. 5.5 The packaging of the wheels with the standard must be carried out by a dedicated person. The total weight of the box should be less than or equal to kg. The outer surface of the packaging should be marked with:
Manufacturer name and certificate;
Product ring and model:
Collection unit and certificate;
Expiry date: 1.
5. Regarding the installation mark and installation, the color of the wheels should be kept within the range of 100% and the color of the wheels should be kept in good condition. 5. x
! The H does not stimulate the flow of turbidity,
Additional instructions:
This card: As a full-scale internal combustion engine standardization system, the Technical Committee completed the second trip: This machine industry before the new
This machine standard main start
This long start, the generation of natural technology
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