JB/T 9764-1999 Technical requirements for rolled connecting rod bushings for internal combustion engines
Some standard content:
ICS27,020
Machinery Industry Standard of the People's Republic of China
JB/T9764-1999
Internal combustion engines
Wrapped connecting rod bushings
Technical conditions
Iaternal combustion engines-Connectlng-rodsmall-end wrapped bushes-Specifications1999-09-17 Issued by State Bureau of Machinery Industry, implemented on January 1, 2000, JB/T9764—1999. This standard is a revision of ZBJ92005—87 (Technical requirements for rolled connecting rods for internal combustion engines). During the revision, the original standard was edited and the main technical content remained unchanged. This standard replaces ZBJ92005—8 from the date of implementation. Appendix A of this standard is the appendix of the original standard. This standard was proposed and managed by the National Technical Committee for Standardization of Internal Combustion Engines. The initiator of this standard: Shangyou Internal Combustion Engine Research Institute. The main drafter of this standard: Bao Jidi. This standard was first issued in 1987. Machinery Industry Standard of the People's Republic of China Technical Requirements for Rolled Connecting Rods for Internal Combustion Engines Engineg-Connecting-Rodsmill-end wrapped bashes-Specifications standard specifies the types, technical requirements, inspection rules and inspection methods of internal weaving machine rolled connecting rods. T9764-1999
Substituted by ZBJ92005-87
This standard is used for tractors, automobiles, engineering machinery, marine and stationary internal combustion engines. Thin-split double-life rolled connecting rods (hereinafter referred to as rolled connecting rod sets)
2 Referenced standards
The provisions contained in the underlined standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be urged to be subscribed, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB:T 699:-199
High-quality carbon steel structural steel
GB/T1176-1987 Technical conditions for copper alloy for chain casting GB/T2828-1987 Batch inspection and sampling procedures and sampling tables (applicable to inspection of continuous batches) 3 Names, codes and markings
3.1 Type
The type of rolled joints is shown in Figure 1
Approved by the National Machinery Industry Council on September 17, 1999 200(L0[-01 Implementation
3.2 Names and codes
JB/T9764-1999
For the names and codes of various parts of the steel connecting rod sleeve, see the table and figure. Table 1
3.3 Marking
Maximum outer diameter
Effective minimum outer diameter
Inner diameter of bearing bushing
Diameter of seat hole of test die
Example of marking for steel connecting rod sleeve:
Basic outer diameter size of steel connecting rod, basic size of external circumference of steel connecting rod sleeve in free state
D The maximum limit size
The minimum limit size
Stop D-2e
The basic size of the total thickness of the installed rod sealing The basic size of the thickness of the rolled connecting rod The basic size of the new sleeve layer of the connecting rod
The basic size of the shaft length The basic size of the bearing seat hole
Inspection model The basic size of the inner diameter of the hole is
The outer diameter is 45m, the total thickness is 1.5mm1, the width is 50mm, and the inner hole is left with a residual plate for processing. The connecting rod sleeve: LC 45×1.5x50JD/T 9764-1999 OD 45mm, wall thickness 1.5mm, width 50mm, inner hole without T margin: LC45×1.5x50-2JBT9764--.19994 Technical requirements
The rolled connecting rod shall be manufactured according to the product drawings and technical documents approved by the prescribed procedures. 4.1
4.2 The lining of the rolled connecting rod bushing shall be made of materials approved by the prescribed procedures or materials specified in GB 1176. 4.3 The backing of the rolled connecting rod bushing shall be made of materials specified in GB 1176-1999, 8F, 10F or light standard. The hardness difference of the backing of the same type of rolled connecting rod bushing made of the same material shall not exceed 401IB units, and the hardness difference of the lining shall not exceed 30HB units. The hardness test method shall be in accordance with Appendix A (Appendix to the standard). 4.5 The lining of the rolled connecting rod bushing shall be completely bonded to the backing, and the bonding surface shall be free of foreign inclusions, oxides, and corrosion. 4. The rolled connecting bushing shall be dense and free of defects such as glue, looseness, shrinkage, foreign inclusions and rust. Surface defects
4.7.1 The surface depressions on the inner and outer surfaces of the rolled connecting rod bushings shall not exceed the requirements of Table 3. The depressions shall be dispersed and the distance between the depressions shall be greater than 0. The depressions shall not be connected to the edge of the part. 2
JA/T9764—1999
External limit
Note: If there are special requirements, they shall be negotiated by the supplier. Depth
Inner surface
4.7.2 The inner and outer surfaces of the rolled connecting rod bushings are allowed to have a slight surface roughness value of less than 1.60μ4. The surface roughness R value of the rolled surface shall not be less than 48 specified in Table 3
Inner surface
Yin.T margin
No T. margin
External surface
Rolled connecting rod The tolerance level of the dimensions of each key part of the bundle shall not be lower than that specified in Table 4. Table 4
External light mouth
Joint:
Reserve processing complexity
No postage allowance
Supplementary mm
Tolerance or tolerance level
4.10.1 When the bundle assembly requires closure, a buckle type connection chain shall be used. The type and size of the buckle shall be agreed upon by both parties. The number of buckles is recommended to be in accordance with the provisions of Table 5. The distance between the buckles should be less than or equal to 40m㎡, Table 5
Width Bmm
Buck tension
>50-100
In the area 1.5mm away from the edge of the buckle, a small amount of thickening or deformation equal to 0.2mm is allowed. 4.10.2
In the free state, the continuous tension of the straight chain rolled connecting rod bushing should not exceed the provisions of Table 6. 4.103wwW.bzxz.Net
4.10.4 In the free state, the radial misalignment α (see Figure 2) and axial misalignment S (see Figure 3) of the key rolled connecting rod bushing at the joint shall not exceed the provisions of Table 6.
> 45-75
>75-100
> 100-150
JB/9764-1999
The maximum value of the connection measurement
To be agreed upon by both parties
The value of the radial position of the connecting rod
A.105 The inner and outer edges of the end face of the connecting rod are allowed to have a radius of less than 0.2mm. 4.11 Warranty period
The maximum value of the axial position of the connecting rod
Under the installation, maintenance and use rules specified in the instruction manual of the internal combustion engine, the warranty period of the rolled connecting rod sleeve should not be less than the warranty period of the internal combustion engine.
5 Acceptance regulations and inspection methods
5.1 Each rolled connecting rod sleeve must be inspected and integrated by the technical inspection department of the manufacturer before it can leave the factory. 5.7 The rolled connecting rod bushings shall be delivered and inspected in batches. When the ordering unit samples the product quality, it shall be carried out in accordance with the provisions and tables of 0BT2828, which shall be agreed upon by both the supply and demand parties.
5.3 Inspection method of outer diameter
5.3.1 Loading inspection method
The outer diameter of the rolled connecting rod bushings produced in batches shall be checked by the load inspection method shown in Figure 4. The seat hole diameter D of the inspection die seat and the inspection cross section shall be determined according to Table B.
5.3.2 Ring gauge inspection method
When the ring gauge inspection method is used to inspect the outer diameter, the rolled connecting rod bushing shall be pushed into the "over" ring gauge by hand. The pushing depth shall not be less than 2 steps 3, but it shall not be pushed into the "out" ring gauge. The hole diameter of the "over" ring gauge shall be equal to the maximum outer diameter P of the roll. The hole diameter of the "smaller than" ring gauge should be equal to the minimum outer diameter D of the rolled connecting rod sleeve: the hole diameter tolerance of the ring gauge is ±[T3/2, its width should generally not be less than the width of the measured rolled chain rod sleeve, but the maximum width can be 5, the ring gauge should have sufficient rigidity, and the hole end should have a small chamfer or fillet, JB.T9764-1999
（Song）
JB/T9764—1999
p<12mm
30D0%gB/
！ When the mouth is <12mm, the F value should be adjusted to the nearest multiple of 250N: when it is 212m, it should be adjusted to the nearest multiple of 500. 2,
-equivalent thickness, mm;
e-thickness of the first layer material, nm:
-equivalent coefficient of the first layer material consumption. Storage: 1: Base metal, F-0.5; Base metal residue: -0.33. 3. The change in the outer diameter of the connecting rod sleeve is calculated by the following formula: 2
Where: The actual value of the outer diameter of the rolled connecting rod, mm: The actual value is "the standard diameter of the center. The actual value and the value of the inspection device are combined, mm5.3.3 Other inspection methods are agreed upon by the supplier and the driver. 5.4 Wall thickness detection
5.4, 1 Wall thickness detection
De12mm
G(00vevBiL
Note: If there is oil on the specified inspection position When the hole, oil pool, standard state or surface defects are allowed to exist, the whole thickness should not be measured at the rolling position 1. The inspection position should be determined by both the supplier and the buyer.
5.4.1.1 Axial direction detection trace
When the diameter is 14mm, the whole thickness should be tested on the central surface of the connecting rod: when the diameter is >14mm, the thickness should be tested on the two sides 5mm away from the connecting rod. 5.4.1.2 Circumferential direction detection position
The thickness should be tested at 5 positions, including 15°±1.3°, 90° and 180° from the connecting chain
5. 4.2 Measuring force
JB/T9764-1999
When using a pressure contact type straight barrier measuring instrument to detect wall feel, its measuring force and measuring belt width shall comply with the provisions of Table 9. Table 9
>80-130
Supply and demand parties agree
Measurement original F
Supply and demand parties agree
5.5 Inspection of the quality of the connection between the village layer and the village back is recommended to be inspected by the mu inspection force method. Or the supplier and the buyer can agree. When the test method is adopted, the bimetallic strip sample is clamped with pliers. The length of the sample above the jaws should be not less than 100. The test width is the same as the bimetallic strip material. The alloy layer of the sample is opened on the metal layer with a pliers jaws. Then the sample is tilted 0° in the back direction with a chisel, and the adhesive layer is pressed along the bonding surface with a chisel according to the length of the sample. If there is any trace of material at the bottom bonding surface, the bonding is unsatisfactory. The width of the connecting rod is 12m, the blade is sharp, and the surface roughness of the blade should not be less than 1.25μm. 6. Marking, packaging, transportation and storage
6.1 Each self-made connecting rod sleeve shall be marked with: the name or factory logo of the manufacturer, the product model or size code. The marked position, size and method shall be in accordance with the product drawings or technical documents, but the parts shall not be damaged. 6.2 Each rolled connecting rod sleeve shall be cleaned and treated with corrosion protection before packaging. 6.3 The outer surface of the packaging box should be marked with: a) manufacturer's name, logo and address; b) product name, internal combustion engine model, part code and quantity; c) packaging date; 4 Each hydrogen packing box should be accompanied by a certificate of conformity signed and stamped by the manufacturer's technical inspection department. 6.5 The connected rod sets packed in the packaging box should be placed in a dry package with waterproof paper, and ensure that the parts will not be damaged during normal transportation. The total weight of each package should not exceed 50 kg. Special packaging must be agreed upon with the supplier. 6.6 The outer surface of the packaging box should be marked with: a) Manufacturer name, logo and address b) Product name, machine model, part number and logo d) Quantity and total weight d) Receiving unit and address f) "Caution", "Moisture-proof", "Pressure" and other signs f) Packing date. 6. The unpacked rolled sleeves should be stored in a ventilated and dry warehouse. Under normal storage conditions, the manufacturer should ensure that the sleeves will not be corroded within 12 months from the date of leaving the factory. 8 9764—1999 Appendix A [Standard Appendix] Hardness test method of lining material A1 The hardness test of the sleeve lining material should be carried out according to the method specified in Table A1. Table Al
Thickness
>Core.7-1.0
> 1.0-1.5
Changed head diametermm
Brinell test full
Teaching load N
Tested by HV5/30 method
Unloading time s6 The outer surface of the packaging box shall be marked with:
a) Manufacturer's name, logo and address:
b) Product name, machine model, part number and mark:
d) Receiving unit and address:
) "Caution and sensitive", "moisture-proof", "pressure-resistant" and other marks:
f) Packing date.
6. The unpacked rolled sleeves shall be stored in a ventilated and well-maintained warehouse. Under normal storage conditions, the manufacturer shall ensure that the sleeves will not be corroded within 12 months from the date of leaving the factory. 8 9764—1999
Appendix A
【Appendix to the standard】
Hardness test method of lining material
A1 The hardness test of the sleeve lining material shall be carried out according to the method specified in Table A1. Table Al
Thickness
>Core.7-1.0
> 1.0-1.5
Changed head diametermm
Brinell test full
Teaching load N
Tested by HV5/30 method
Unloading time s6 The outer surface of the packaging box shall be marked with:
a) Manufacturer's name, logo and address:
b) Product name, machine model, part number and mark:
d) Receiving unit and address:
) "Caution and sensitive", "moisture-proof", "pressure-resistant" and other marks:
f) Packing date.
6. The unpacked rolled sleeves shall be stored in a ventilated and well-maintained warehouse. Under normal storage conditions, the manufacturer shall ensure that the sleeves will not be corroded within 12 months from the date of leaving the factory. 8 9764—1999
Appendix A
【Appendix to the standard】
Hardness test method of lining material
A1 The hardness test of the sleeve lining material shall be carried out according to the method specified in Table A1. Table Al
Thickness
>Core.7-1.0
> 1.0-1.5
Changed head diametermm
Brinell test full
Teaching load N
Tested by HV5/30 method
Unloading time s
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