JB/T 9712-2001 Technical requirements for casting of torque converter impeller
Some standard content:
1CS53.100
Machinery Industry Standard of the People's Republic of China
JB/T9712-2001
Casting technical specification for hydrdynamic torque converter blade wheeks2001-04-03 Issued
China Machinery Industry Federation
2001-10-01 Implementation
JD/F9712—2001
This standard is a revision of JB/T9712—1999 "Casting Technical Specification for Hydraulic Torque Converter Blade Wheeks". Compared with JB/T9712—1999, this standard puts forward new requirements for the chemical composition of the casting, the limit deviation of the impeller diameter, and the pitch tolerance of the maximum and minimum impeller blades. This standard will replace JH/9712—1999 from the date of implementation. This standard was proposed and coordinated by the Mechanical Industry Engineering Machinery Standardization Technical Committee. The unit that initiated this standard: Tianjin Dingcheng Machinery Research Institute. The main drafters of this standard: Zhu Fengjian and Yang Zhuoxiang. 4 The standard was first issued in October 1988 as 2BJ85010--88, and the standard number was changed to JB/T9712-1999 in 1999. This is the first revision.
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Casting of Hydraulic Torque Converter Impeller
This standard specifies the technical requirements, test specifications, and inspection specifications of hydraulic torque converter impellers. JB/T 9712-2001
JB12-5
This technical standard is applicable to sand mold, metal mold, and polished aluminum alloy castings of hydraulic torque converter impellers (wheels, turbines, and guide wheels). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard is published, the versions shown are valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest version of the above-mentioned standard. GB/T 2281↓87
GB/T 231.1984
GB/T6307—1986
GBT28281987bzxz.net
JB/T 594I1991
JB/T5944199#
3 Technical requirements
Metal tensile and punching test methods
Jinbuwa iodine test force
Jinzhan pull-stop test specimen
Remote batch inspection counting oil sample procedure sampling table (applicable to sub-continuous batch inspection) Engineering machinery city General technical conditions for non-ferrous alloy castings General technical conditions for heat-treated parts of engineering machinery 3.1 Casting brand, chemical composition and mechanical properties 3.1.1 The brand, code and chemical composition of castings shall comply with the provisions of 3.2.1 in IB/T5941 [991. 3.1.2 The mechanical properties of castings shall comply with the provisions of Table 1. 3.1.3 For those with mechanical properties equal to or greater than Table 1! Other aluminum-based alloys can be substituted. Table 1 Mechanical properties of castings
Mechanical energy (not small)
Flow method
Heat treatment state
Resistance
Brinell degree
18 Sand mold sodium casting: H Modification treatment: 1—Jin Guo mold, T6 solid solution treatment plus complete artificial aging: F—elimination state. 2 T6 Replacement training according to the provisions of JB/T 1941—11 A approved by China Machinery Industry Federation on 2001-04-03.
2001-10-01 Implementation
3.2 Casting Dimension Deviation
JB/T 97122001
Special parts size limit deviation shall comply with the provisions of Table 2, Table
Casting Dimension Limit Deviation
Group Parts Overall Size
>120-250
>240-400
>500-[250
>50-120
Missing Parts
>120-250
1 When the precision grade is specified in the technical document, the size deviation shall be checked according to Group II. 2 The size deviation does not include the size increase caused by material distortion. 3.2.2
The limit deviation of wall thickness and rib thickness of castings shall comply with the provisions of Table 3. Table 3 Casting wall thickness and rib thickness Deflection pad Large size > 5 (0-125G Note: Same as Table 2. Degree of strength 3.2.3 Impeller diameter limit deviation according to Table 4 Impeller point diameter relative to the limit of the impeller diameter 3.2.4 Maximum blade pitch The tolerance shall conform to the provisions of Table 5, 56-10
Thick embryo thickness of the swimming piece
>10-18
>265~355
Table 5 General leaf pitch tolerance
Yechuan Jiechen Gonglao
>5U0-B00
>18-30
>800-[25D
>30~30
>35 5-539
JB.T9712—2001
3.2.5 Any angle radius not specified in the drawing shall be 2~5mm. 3.1 Geometric shape deviation of castings
3.3.1 The shape and size of castings shall be based on the drawing. The misalignment and eccentricity of castings shall be guaranteed to be not less than the specified in Table 2 and Table 3 on the non-forgotten surface. The casting mold inclination and casting size shall be The machining allowance of the parts shall comply with the provisions of Appendix B and Appendix C of 5941-191. 3.3.2 The shape position deviation of each point of the casting blade streamline 1 relative to each coordinate point is within 1.0mm. 3.4 Surface quality of castings
3, the casting surface is allowed to be treated by aging shot or blasting. The surface roughness of the casting surface shall comply with the provisions of Table 6. |tt||Surface twisting degree is not allowed to be stored
Impeller flow channel surface
The surface of the rotating parts should comply with the regulations of the table: The surface marks of the scale parts should avoid
Sitting, awn sand, core pieces, sticky sand, canning materials, gas
Not allowed
Generally, 1 coat is added
The convexity on the non-added T surface is not more than 1.5mm, and the convexity on the T surface is not more than 5mm, which is not allowed. The measurement should ensure that there is 1/3 plus 1 margin. The surface of the final product after the repair is flush. Without affecting the performance and the maintenance of the product, the small defects allowed on the non-cut surface meet the requirements of the table, and the defects allowed on the surface after processing meet the requirements of Table 9. Table S The types of defects allowed on the processing surface of the pins are as follows: pores, holes, sand, wrinkles, and eggs. Non-spots. Depth of the foundation should be
21 width
defect size
allowable defect reduction~teaching
within 0m
on a gear
on the flow channel surface, 3 places are allowed, but each blade is not more than 2 places. The defects allowed on the casting process are pores, holes, sand limits
clothing and special
…general processing surface|| tt||250-500
Dense surface parts are subject to small parts
Defect size ... Number of pinholes
Needle machine diameter
3.5.4 After the work, water test is carried out. Under 990% kPa, it lasts for 3 minutes. There shall be no leakage. 3.6 Provisions for repairing defects of rotating parts
Percentage
3.6.1 The defects in the casting table are inconsistent with 3.4.3 If the assumptions do not exceed the range of Table 11 and the repair does not affect the service life and performance, repair is allowed; the surface that has or is not allowed to have defects shall not be repaired. Table 11 Casting surface defects
Total area of defects Percentage of area
51.3 Thickness
3.6.2 The performance of the welding material is the same or similar to that of the spare part material Number of defects in the piece
3.63 After the casting is repaired, the difference in hardness between the welded part and the parent part should be within the range of +10H. 3.4 The number of welds at the same repaired part shall not exceed two times. 3.6.5 In order to improve the gas dissolution and pressure resistance, fatigue treatment is allowed for the wheel. 4 Test method
4. Preparation of sample
4.1.1 The mechanical properties of the test piece are based on the test performance of the same furnace single casting: 4.1.1 The shape and size of the sample are as shown in Figure 1. The test (test mold) should adopt the form of Figure 7 and Figure 5 in JBT5941-1991. In general, the shape and size of the sample
4.1.3 When preparing the body sample, the sample shape is a 6mm round or flat half shape, and its size should comply with the mechanical properties of GR/T6397. 4.1.4 The mold material of the mold test sample is consistent with the mold material of the casting. The mold material of the mold test is specified as continuous, 4
JB/T9712-2001
4.1.5 The sample and the casting are cast with aluminum alloy body and heat treated in the same way in the furnace. 4.2 The tensile test shall be carried out in accordance with the provisions of 6B/T223. 4.3 The lithium test shall be carried out in accordance with the provisions of GB/1231. 4.4 The chemical composition shall be carried out in accordance with the provisions of 4.1 of JB/T59411991. 5 Inspection rules
5.1 Each cast impeller shall be inspected and qualified by the quality inspection department of the manufacturer before it is allowed to leave the factory. The factory inspection items include the outer crown of the impeller, the working mass rate of the machine, the elasticity of the working surface, the endurance performance, etc., and the inspection is carried out during the production process. 5. 2 Type test
5.2.1 Classification of unqualified items
All inspection items that do not meet the requirements of Chapter 3 are unqualified items. According to G2828 and the degree of influence on product quality, qualified items are divided into Class A, Class B and Class C unqualified items, see Table 25 Table 12 Classification of unqualified items
Unqualified category
(Cause)
(Severe)
(General]
5.2.1 Sampling plan
Unqualified
Impeller crack system, defective manufacturing, defective quality
Impeller can Reliability to meet the requirements
Impeller chemical composition does not meet the requirements
Impeller resistance does not meet the requirements
Impeller surface floatability does not meet the requirements
There are scratches on the impeller surface
Impeller surface micropores, sand to meet the requirements 5.2.2.1 Sampling plan type: Select a normal sampling plan: 5.2.2.2 Inspection level: Select general inspection 5.2.2.3 Qualification inspection: Generally, it is 1G-25. When random sampling is used, the size of W is not limited. Random sampling: 5.2.2.4 Sample size R: The sample size code is month, sample size = 3 (pieces), and the items listed in Table 12 should be inspected, and at least one piece should be dissected to inspect the internal quality. The results of this dissection inspection represent the results of 3 pieces: 5.2.2.5 The AQL value of the quality level is shown in Table 13. 5.2.2.6 Sampling plan, Table 13 A01. In the table, is the acceptable quality level of each unit product, where 4 represents the qualified judgment number per hundred units of products, and e represents the unqualified judgment number per hundred units of products. The number of items can be used as the unit of judgment during inspection. Table 13 Sampling plan
No quality classification
5.2.3 Evaluation of random sampling inspection
JB/I 9712—2001
According to the sampling plan, the sample is inspected and the results are filled in the summary table (see Table 14). When the number of unqualified items per hundred items in the sample is less than or equal to 4, it is judged as qualified, and when it is greater than or equal to 10, it is judged as unqualified. When all categories are judged to be qualified, the product is finally evaluated as qualified, otherwise it is slightly qualified. However, it is allowed to replace the missing unqualified items of Class C with the missing unqualified items of Class A. Summary table of inspection results
Class A wood products
Sampling plan
Mark and certificate
Random instant dream
H type non-conformity
AQL=100
Huai Ling Jie Dian Fa
Nan Ze Yue
6. Qualified castings shall be accompanied by the mark of the manufacturing quality inspection department. 6.2 Castings shall be accompanied by a certificate of conformity when leaving the factory, which shall indicate: a) Manufacturer name:
b Part name, drawing number and effect code:
e) Alloy code:
Standard code.
C If not in compliance
AQL-25th
Cannot be effective
Oil Xiang Scheme3 Evaluation of sample inspection
JB/I 9712—2001
According to the sampling plan, the sample is tested and the results are filled in the summary table (see Table 14). When the number of non-conforming items per 100 items in the sample is less than or equal to 4, it is judged as qualified, and when it is greater than or equal to 10, it is judged as unqualified. When all categories are judged to be qualified, the product is finally evaluated as qualified, otherwise it is slightly qualified. However, it is allowed to replace the missing non-conforming items of Class C with the missing non-conforming items of Class I. 14 Summary table of inspection results
Class A wood panel
Sampling plan
Marking and certificate
Nan Ku Mengfa
Class H non-conforming
AQL=100
Huai Ling Jie Dianfa
Nan Ze Yue
6.! Qualified castings shall be accompanied by the mark of the manufacturer and quality inspection department. 6.2 Castings shall be accompanied by a certificate of conformity when leaving the factory, which shall indicate: a) Manufacturer name:
b Part name, drawing number and specification:
e) Alloy code:
Standard code.
C If it does not meet the family
AQL-25th
cannot be used
Oil Xiang Scheme3 Evaluation of sample inspection
JB/I 9712—2001
According to the sampling plan, the sample is tested and the results are filled in the summary table (see Table 14). When the number of non-conforming items per 100 items in the sample is less than or equal to 4, it is judged as qualified, and when it is greater than or equal to 10, it is judged as unqualified. When all categories are judged to be qualified, the product is finally evaluated as qualified, otherwise it is slightly qualified. However, it is allowed to replace the missing non-conforming items of Class C with the missing non-conforming items of Class I. 14 Summary table of inspection results
Class A wood panel
Sampling plan
Marking and certificate
Nan Ku Mengfa
Class H non-conforming
AQL=100
Huai Ling Jie Dianfa
Nan Ze Yue
6.! Qualified castings shall be accompanied by the mark of the manufacturer and quality inspection department. 6.2 Castings shall be accompanied by a certificate of conformity when leaving the factory, which shall indicate: a) Manufacturer name:
b Part name, drawing number and specification:
e) Alloy code:
Standard code.
C If it does not meet the family
AQL-25th
cannot be used
Oil Xiang Scheme
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