JB/T 8784-1998 This standard specifies the technical requirements, test methods, inspection rules, etc. of the drum sand-falling machine (hereinafter referred to as the sand-falling machine). This standard is applicable to the sand-falling, separation and cooling sand-falling machines on the molding line with a sand-iron ratio of 4 to 10. JB/T 8784-1998 Technical conditions for drum sand-falling machines JB/T8784-1998 Standard download decompression password: www.bzxz.net

The People's Republic of China Machinery Industry Standard
JB/T8784-1998
Drum Sanding Machine
19980717 Release
Technical Conditions
1998-12-0 Implementation
National Machinery Industry Sub-category
3B/T 8784-1998
This standard is proposed and managed by the National Foundry and Plastic Pressing Machinery Research Institute of the Ministry of Machinery Industry, Suzhou Tongli Machinery Factory, and Linhai Thin-casting Machinery Factory. The main drafters of this standard are Shi Daizeng, Chen Zaojin, Wang Zhen, and Xian Zi Brush. 1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Specifications of Drum Sand Shaking Machine
JB/T8784—1998
This standard specifies the technical requirements, test methods and inspection rules of the sand shaking machine (hereinafter referred to as the sand shaking machine). This standard is used for the sand shaking, separation and cold piercing of the casting mold on the molding line with a sand-iron ratio of 4:1. 2 References
The texts contained in the following standards shall become the main texts of this standard by reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised over time. The parties using this standard should consider the possibility of using the following standards instead of the new ones CB/T5225.1-1S Industrial machinery electrical equipment Part 1: General technical conditions-91
JB/T 535/91
JB/T 5355. 1-U1
JB/T 6331.2...92
ZBJ5C05688
ZBn Ja cus. 2-&x
3 Technical requirements
General technical conditions for casting machinery
Wheel cleaning, paint cleaning equipment technical conditions for casting machinery sugar cleanliness determination method measurement methodWww.bzxZ.net
Etc. Method for measuring machine noise sound pressure level determination Preparation of random technical documents for cutting machine tools General technical conditions for welding parts of cutting machines 3.1 The design of the casting shall comply with the provisions of this standard and shall be manufactured according to the drawings and technical documents approved in the prescribed order. 3.2 The electrical system shall comply with the provisions of GB/T5225.1. 3.3 The welding parts shall comply with the provisions of ZBrlJSUU8.2. 3.4 Dust prevention measures shall be taken for the raceway and external transmission parts of the casting. 35 The connection degree between the chain and the pulley shall be greater than or equal to 50% of the connection degree of the supporting wheel. 3.6 The reduction box shall not have oil leakage.
3. The cleanliness of the gearbox should not be greater than 0.3% of the weight of the lubricant under the lubricant mark. 3.8 The bottom of the simplified family package has obvious signs, 3. The exposed chain should be flat, smooth or uniform, except for the flaky effect surface, and the surface should be clean. 3.10 The painting of the sand-falling machine should comply with the provisions of JB/T5.161. 3.11 The random labor and technical documents should include the product manual, product certificate and packing list. The preparation of random technical documents should comply with the provisions of 2BJ50006.
3.13 Idle running test
3.12.1 The idle running time of the motor should be no less than h. 3.12.2 All machines should run smoothly and without any noise. The noise should not exceed B5 (A). 3.12.3 The lift of the bearing should not exceed 33T, and the height of the point should not exceed 70T. 3.13.1 Before the negative running test, an operation test should be carried out. Approved by the State Machinery Industry Bureau on July 17, 1998, 1201, JD/T5784 1998
3.13.2 Under rated load, the running time should be no less than F4. 3.13.3 Under rated load, the motor power should not be greater than the rated power of the motor. 4 Test method
4.1 The speed limit of the magnetic field is determined according to the provisions of JB/T5365.1. 4.2 The sound is determined according to the provisions of JB/TE331.2. 5 Inspection specification
5. 1 Factory inspection
5. 1. 1 Each sand machine shall be shipped after passing the inspection. 5.1.2 The strict inspection shall be carried out according to the provisions of 3.3, 3.5, 3.8.3.9, 3.10 and 3.12, and all the inspection items shall be qualified. 5.2 Type inspection
5. 2. 1 When one of the following conditions occurs, a spring test shall be carried out. 8) Timing of trial cutting and finalization of new products or old products: 1) After formal production, when there are major changes in structure, materials, and processes that may affect product performance; when the product is resumed after more than one year of production; 2) When the national quality supervision agency proposes a change inspection requirement. 5.2.2 During type inspection, 2% of each batch of sand-falling machines shall be randomly sampled, but the annual inspection shall not be less than one set. 5.2.3 The type inspection items shall be all those specified in the standards, and all the inspection items shall be qualified. 5.2.4 When the manufacturer does not meet the conditions for type adjustment, it is allowed to conduct type inspection at the user. Stone Packaging, Marking and Transportation
The packaging, marking and transportation of sand-falling machines shall comply with the provisions of 7.1-7.5 in JH1644--91.
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