JB/T 5083-1991 Technical requirements for dry cast iron cylinder liners for internal combustion engines
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB5083-91
Dry Cast Iron Cylinder Liners for Internal Combustion Engines
Technical Conditions
Published on July 1, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on July 1, 1992
Mechanical Industry Standard of the People's Republic of China
Dry Cast Iron Cylinder Liners for Internal Combustion Engines
Technical Conditions
1 Subject Content and Scope of Application
JB5083-91
This standard specifies the terminology, technical requirements, inspection rules and inspection methods, marking, packaging, transportation, labeling, purchase and storage of dry cast iron cylinder liners for internal combustion engines. Www.bzxZ.net
This standard applies to dry cast iron cylinder liners for reciprocating piston internal combustion engines with a cylinder diameter less than or equal to 150mm (hereinafter referred to as cylinder liners).
2 Reference standards
GB1031
GB1184
GB1800
GB1958
GR2828
GB6388
GB9439
JB2330
ZBJ92011
3 Terminology
3.1 Cylinder liner
Packaging, storage and transportation graphic symbols
Metal Rockwell hardness test method
Metal Brinell hardness test method
Surface roughness parameters and its value
Shape and position tolerances Provisions for tolerances not indicated Tolerances and fits, general standard tolerances and basic deviations Shape and position tolerances testing provisions
Batch inspection Count sampling procedures and sampling tables (applicable to inspection of continuous batches) Transport packaging Shipping and receiving marks
Gray cast iron parts
Metallographic inspection of high-phosphorus cast iron cylinder liners for internal combustion engines Metallographic inspection of cast iron cylinder liners for small and medium-power internal combustion engines Magnetic particle flaw detection methods for parts and components of internal combustion engines
Technical conditions and testing methods for platform grinding of cylinder liners for internal combustion engines Cylinder liners whose coolant of internal combustion engines does not directly contact the external surface of the cylinder liners. 3.2 The main parts of the typical structure of cylinder liners are shown in Figure 1. Approved by the Ministry of Machinery and Electronics Industry on July 1, 1991 and implemented on July 1, 1992
4 Technical requirements
JB5083-91
Part name
Inner circle surface
Upper inner round angle
Supporting corrugation
Lower end face of supporting shoulder
Outer ring surface
Part name
Lower outer round chamfer or guide
Lower shoe surface
Lower inner round chamfer
Introduction groove
Upper end face of supporting bottom
4.1 Cylinder liner shall be manufactured according to product drawings and technical documents approved through prescribed procedures. 4.2 The mechanical strength of cylinder liner material shall meet the HT200 requirements specified in GB9439, and its tensile strength shall be 200MPa. Hardness of the inner surface of the cylinder liner within the piston ring stroke range 4.3
4.3.1 The hardness of the cylinder liner of the gasoline engine without surface treatment shall be greater than or equal to 210HBS. 4.3.2 The hardness of the cylinder liner of the gasoline engine without surface treatment shall be greater than or equal to 190HBS. The surface hardness and hardening layer depth of the cylinder liner with surface treatment shall comply with the product drawing requirements. 4.3.3:
The hardness difference of the inner surface of the same cylinder liner with surface treatment shall be less than or equal to 30HBS; the hardness difference of the cylinder liner with surface treatment shall comply with the product drawing requirements. 4.4 Metallographic structure of the material within the piston ring stroke range of the inner surface of the cylinder liner 4.4.1
High phosphorus cast iron cylinder liner shall comply with the provisions of JB2330, and boron cast iron cylinder liner shall comply with the provisions of NJ267. 4.4.3 Cylinders of other materials shall comply with the metallographic standards approved by the competent authorities. 4.5 Chemical composition of cylinder sleeve materials
Cylinder sleeve manufacturers can specify their chemical composition according to their own conditions while ensuring the mechanical properties of cylinder sleeve materials and the shear strength of metal structure.
4.6 Dimensional tolerances of cylinder sleeves
4.B.1 The dimensional tolerances of the inner diameter (without boring allowance) and the outer diameter of the cylinder sleeve shall comply with the IT7 grade specified in GB1800. The inner diameter tolerance of the cylinder sleeve with boring allowance shall be specified in the product drawing. 4.6.2 The height tolerance of the support shoulder is 0.05mm. The cylinder sleeve with machining allowance on the upper end face of the support shoulder shall be specified in the product drawing. 2
JB5083—91
4.6.3 The inner diameter outside the piston ring stroke allows the size increment of the two ports caused by grinding, and its value shall be less than or equal to 0.02mm. 4.6.4 Wall thickness tolerance of cylinder liner
.0.06mm for inner diameter less than or equal to 120mmb.0.08mm for inner diameter greater than 20mm; wall thickness tolerance of cylinder liner with boring allowance is 0.15mm. e.
4.6.5 When cylinder liner is grouped according to inner diameter (outer diameter), it shall be grouped within the inner diameter (outer diameter) dimension tolerance range specified in the product drawing, and the product shall be grouped according to the minimum (maximum) dimension. The dimension grouping interval shall be less than or equal to 0.02mm. The maximum (minimum) dimension of the inner diameter (outer diameter) of the cylinder liner may exceed the upper (lower) dimension of the group. In the extreme case, the exceeding value shall be less than or equal to twice the columnar tolerance specified in Article 4.7. The grouping code is represented by A, B, C, (a, b, c), and its order is from the smallest (largest) size group to the largest (smallest) size group. 4.7 Cylinder shape and position tolerance
4.7.1 The cylindrical tolerance value of the inner circle of the cylinder sleeve shall comply with the 9th grade specified in GB1184. The tolerance value of the inner circle surface of the cylinder sleeve measured in the free state is 0.05mm; the roundness tolerance value of the cylinder sleeve with an inner diameter greater than 120mm is 0.06mm; the parallelism tolerance value of the inner circle surface line to the center line is 0.015mm. The cylinder sleeve with a short length shall be specified in the product drawing. 4.7.2 The roundness tolerance value of the outer circle surface of the cylinder sleeve. The inner diameter is less than or equal to 120mm is 0.05mm; the inner circle diameter is greater than 120mm is 0.08mm, and the parallelism tolerance value of the outer circle surface line to the center line is 0.015mm. 4.7.3 The end face runout tolerance of the lower end face of the cylinder sleeve support shoulder to the outer surface axis is 0.04mm; for cylinder sleeves with an inner diameter greater than 120mm, the end face runout tolerance is 0.06mm. 4.8 Surface roughness of various parts of the cylinder sleeve
4.8.1 Roughness of inner surface
When the inner surface is generally ground, within the piston ring travel range R, 0.32~0.63um; when the inner surface is a platform honed double groove, it shall be in accordance with the provisions of ZBJ92011 or the product drawing; b.
The inner surface roughness of the cylinder sleeve with a disc is R6.3um, c
4.8.2 Roughness of the outer surface R.1.25um. 4.8.3 Surface roughness of the lower end face of the support shoulder R, 2.5μm. 4.9 Appearance quality of various parts of cylinder liner
4.9.1 The inner and outer surfaces of cylinder liner are not allowed to have rust, dents and casting defects, but the following defects are allowed without affecting the performance
. The inner surface is allowed to have 5 holes with a length less than 0.7mm, a depth less than 0.5mm and a hole pitch greater than 30mm within the piston ring stroke range,
The outer surface is allowed to have 5 holes with a length less than 1.0mm, a depth less than 0.5mm and a hole pitch greater than 30mm. b.
The hole defects on the inner and outer surfaces shall not be located in the same position: c. The scratches caused by the sand grains of the grinding oil are allowed to have a depth less than 0.05mm and a width less than 0.2mm, but the scratches shall not be parallel to the axis of the cylinder liner. 4.9.2 Holes with a length less than 0.3mm are ignored, but dense holes are not allowed. One hole with an area less than 3cm2 is allowed outside the piston ring travel range.
4.9.3 Casting defects are not allowed on the upper and lower end surfaces of the backing and support shoulders. 4.10 Magnetic particle inspection
The cylinder liner is not allowed to have cracks, cracks and other defects. Demagnetization treatment is also required. 4.11 Warranty period
The service life of the cylinder liner shall not be less than the warranty period of the main engine. During the warranty period, if the damage is indeed caused by manufacturing quality under normal user conditions, the manufacturer shall replace it for the user free of charge. 5 Inspection rules and inspection methods
JB5083--91
The cylinder liner products shall be inspected and qualified by the quality inspection department of the manufacturer according to the product drawings and relevant technical documents before they can be shipped out of the factory 5.2 Inspection items
Mechanical strength:
Hardness:
Metallographic structure:
Dimension tolerance:
Shape and position tolerance;
Surface roughness or platform grinding texture quality: Appearance quality:
Special requirements specified in product drawings and technical documents. Surface fire cylinder liner should be subjected to magnetic particle inspection and demagnetization treatment. L
5.3 Inspection method
5.3.1 Mechanical strength
The mechanical strength test specimen of the cylinder liner shall be sampled on the body of the cylinder liner, and three test specimens shall be made on the same cylinder liner. The average value of the three test specimens shall be used as the judgment value of the cylinder liner. The test specimen shall be made within the range of 25 to 185 mm from the upper surface of the cylinder liner. The reference size of the test specimen is shown in the figure.
5.3.2 Hardness test method According to the provisions of GB231 and GB230, 5.3.2.1 The test specimen shall be made within the range of 50 to 75 mm from the upper end surface of the cylinder liner, and the average value of three points shall be taken as the judgment value of the cylinder liner. 5.3.2.2 The hardness difference shall be measured within the same radial load surface of the cylinder liner. 5.3.3 The metallographic structure shall be inspected according to the methods specified in the relevant standards. 5.3.3.1 High phosphorus casting cylinder liner shall be inspected according to the method specified in JB2330. 5.3.3.2 The boron iron cylinder liner shall be inspected according to the method specified in NJ267. 5.3.4 Dimensional tolerance
5.3.4.1 Measurement of inner diameter: After the cylinder liner is rounded, measure any two mutually perpendicular diameters of the upper, middle and lower three bearing surfaces of the inner circle. The upper and lower sections should be the two extreme positions of the piston ring stroke, but the lower limit position and the one less than 30mm from the lower end surface should be measured at 30mm. When the cylinder liner is measured in a free state, the maximum and minimum values at the three measuring base positions should be measured and the average value should be taken. 5.3.4.2 The outer diameter of the cylinder liner, respectively measure the maximum and minimum values in the upper, middle and lower three transverse sections, take the average value, or use a perimeter meter to measure the circumference of the upper, middle and lower three transverse sections to calculate the diameter size. The upper and lower two numerical surfaces are 30mm away from the upper and lower end surfaces respectively (or as specified in the product drawing).
JB5083—91
5.3.4.3 The wall thickness difference between the inner and outer surfaces is measured at the radial wall thickness on the circumference at a distance of 50mm from the upper and lower end faces, and the maximum difference is taken.
5.3.5 Shape and position tolerance
5.3.5.1 Cylindricity of the inner surface is measured at the same location as 5.3.4.1. According to the method specified in 1-1 of Appendix (4) Cylindricity Error Test of GB1958. When the testing equipment and conditions cannot be met, the cylinder is allowed to be replaced by measuring the roundness and the parallelism of the cable line to the center line. The maximum and minimum diameters in the radial section are allowed to be measured, and half of the difference is taken for calculation. The parallelism of the element line to the center line is allowed to measure the diameter size in the same axial drum surface of the inner surface, and half of the difference is taken for calculation. 5.3.5.2 The cylindricity and measuring position of the outer cylindrical surface are the same as those in 5.3.4.2, and the method specified in 1-1 of the cylindrical error test in Appendix (4) of GB1958 shall be followed. When the testing equipment and conditions cannot be met, the cylindricity is allowed to be measured by roundness and the parallelism of the cable to the center line instead. The roundness is allowed to measure the maximum diameter and the minimum diameter in the radial section, and the calculation is calculated by taking half of the difference. The parallelism of the cable to the center line is allowed to measure the diameter size in the same axial section of the outer circle, and the calculation is calculated by taking half of the difference. 5.3.5.3 The end face runout of the lower end face of the support shoulder to the axis of the outer cylindrical surface shall be measured according to the method specified in 4-7 of the runout test in Appendix (13) of GB1958.
5.3.6 Surface roughness
5.3.6.1 The roughness measurement of each surface shall be in accordance with the provisions of GB1031. 5.3.6.2 The inspection of the grinding pattern of the inner surface platform shall be evaluated according to the method specified in ZBJ92011. 5.4 When the ordering unit samples the quality of the product, it shall be carried out according to the provisions of GB2828. The sampling method and evaluation method shall be agreed upon by the supply and demand parties. 6 Marking, packaging, transportation, storage
6.1 Each cylinder sleeve shall be marked with:
, manufacturer name or trademark:
b. Group code.
The marking shall be permanent, and the marking position, size and method shall be in accordance with the product drawings or technical documents. Care shall be taken not to damage the cylinder sleeve. 6.2 When the cylinder sleeve leaves the factory, it shall be accompanied by a product certificate signed by the inspector of the quality inspection department of the manufacturer. 6.3 The packaging method and method of the cylinder sleeve shall be determined by the manufacturer according to the regulations of the transportation department or negotiated with the ordering unit, and it shall be ensured that the product will not be damaged under normal transportation conditions.
6.4 The markings on the outer surface of the packaging box shall comply with GB6388 and GB191 and relevant regulations. Generally, the following should be marked:
Manufacturer name and address;
Product name and model:
Factory date: year
Volume: length × width × height, mm;
Weight: kgt
Quantity,
g, "Handle with care", "Moisture-proof" and "Pressure-proof" signs, etc. 6.5 The packaging box of the cylinder liner should be placed in a ventilated and dry warehouse. The anti-rust method of the cylinder liner is determined by the manufacturer. Under normal storage conditions, it will not rust within 12 months from the date of shipment, or as agreed by the supply and demand parties. Additional remarks
This standard is proposed and managed by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry, and the main authors of this standard are Chen Xianzhi and Xu Ruiqin.2 The inspection of the grinding pattern of the inner surface platform shall be evaluated according to the method specified in ZBJ92011. 5.4 When the ordering unit samples the quality of the product, it shall be carried out according to the provisions of GB2828. The sampling method and evaluation method shall be agreed upon by the supply and demand parties. 6 Marking, packaging, transportation, storage
6.1 Each cylinder sleeve shall be marked with:
, manufacturer name or trademark:
b. Group code.
The marking shall be permanent, and the marking position, size and method shall be in accordance with the product drawings or technical documents. Care shall be taken not to damage the cylinder sleeve. 6.2 When the cylinder sleeve leaves the factory, it shall be accompanied by a product certificate signed by the inspector of the quality inspection department of the manufacturer. 6.3 The packaging method and method of the cylinder sleeve shall be determined by the manufacturer according to the regulations of the transportation department or negotiated with the ordering unit, and it shall be ensured that the product will not be damaged under normal transportation conditions.
6.4 The markings on the outer surface of the packaging box shall comply with GB6388 and GB191 and relevant regulations. Generally, the following should be marked:
Manufacturer name and address;
Product name and model:
Factory date: year
Volume: length × width × height, mm;
Weight: kgt
Quantity,
g, "Handle with care", "Moisture-proof" and "Pressure-proof" signs, etc. 6.5 The packaging box of the cylinder liner should be placed in a ventilated and dry warehouse. The anti-rust method of the cylinder liner is determined by the manufacturer. Under normal storage conditions, it will not rust within 12 months from the date of shipment, or as agreed by the supply and demand parties. Additional remarks
This standard is proposed and managed by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry, and the main authors of this standard are Chen Xianzhi and Xu Ruiqin.2 The inspection of the grinding pattern of the inner surface platform shall be evaluated according to the method specified in ZBJ92011. 5.4 When the ordering unit samples the quality of the product, it shall be carried out according to the provisions of GB2828. The sampling method and evaluation method shall be agreed upon by the supply and demand parties. 6 Marking, packaging, transportation, storage
6.1 Each cylinder sleeve shall be marked with:
, manufacturer name or trademark:
b. Group code.
The marking shall be permanent, and the marking position, size and method shall be in accordance with the product drawings or technical documents. Care shall be taken not to damage the cylinder sleeve. 6.2 When the cylinder sleeve leaves the factory, it shall be accompanied by a product certificate signed by the inspector of the quality inspection department of the manufacturer. 6.3 The packaging method and method of the cylinder sleeve shall be determined by the manufacturer according to the regulations of the transportation department or negotiated with the ordering unit, and it shall be ensured that the product will not be damaged under normal transportation conditions.
6.4 The markings on the outer surface of the packaging box shall comply with GB6388 and GB191 and relevant regulations. Generally, the following should be marked:
Manufacturer name and address;
Product name and model:
Factory date: year
Volume: length × width × height, mm;
Weight: kgt
Quantity,
g, "Handle with care", "Moisture-proof" and "Pressure-proof" signs, etc. 6.5 The packaging box of the cylinder liner should be placed in a ventilated and dry warehouse. The anti-rust method of the cylinder liner is determined by the manufacturer. Under normal storage conditions, it will not rust within 12 months from the date of shipment, or as agreed by the supply and demand parties. Additional remarks
This standard is proposed and managed by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery and Electronics Industry, and the main authors of this standard are Chen Xianzhi and Xu Ruiqin.
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