This standard is formulated based on the current technical level of bowl-shaped resin sand mixers in my country. This standard specifies the technical requirements, test methods and inspection rules for bowl-shaped resin sand mixers. This standard applies to bowl-shaped resin sand mixers (hereinafter referred to as mixers). JB/T 8497-1996 Technical conditions for bowl-shaped resin sand mixers JB/T8497-1996 Standard download decompression password: www.bzxz.net

The People's Republic of China Machinery Industry Standard
JB/T 8497 96
Wan-shaped resin sand mixer
1996-11-07 Release
The Ministry of Machinery Industry of the People's Republic of China
Technical conditions
1997-11-01 Implementation
JE/T 8497—96
This standard is formulated based on the existing technical level of the crushing and mixing machine for resin. In order to meet the needs of domestic and foreign trade, technology and economic exchanges, it stipulates the technical requirements, test methods, inspection rules and other technical contents of the crushing and mixing machine for resin. This standard has been implemented since January 1, 1957. From January 1, 1997, all the products of the crushing and mixing machine for resin shall comply with the regulations of this standard. This standard is proposed and coordinated by the State-owned Machinery Manufacturing Technical Committee, and the original unit is the crushing and mixing machinery research institute and Baoding foundry machinery factory. The main person in charge of the standard is Lu Jun and Liu Qifeng. 1
|1Scope
Machinery industry standard of the People's Republic of China
Technical requirements of crushing and mixing machine for resin.
This standard stipulates the technical requirements, test methods and inspection rules of the crushing and mixing machine for resin. This standard applies to flow tree sand filter (hereinafter referred to as standard sand filter). 2 Reference standards
JB/T8497-96
The provisions contained in the following standards are constituted as the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. Parties to this standard should explore the possibility of using the latest versions of the following standards: GB[D:-90
GH/T6226.1—1996
GB793237
GB/T1A069
JHT556491
JD5515.91
IB1 6331. 2 -$2
ZB J43UU6-85
7B J50 006-68
ZBn50008.2:86
ZH I50 01485
3 Technical requirements
3.1 Requirements
Packaging, storage and transportation, graphic symbolsWww.bzxZ.net
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3.1.1 The mixer shall comply with the provisions of this standard and be created with drawings and technical documents approved in the prescribed order. 3.1.2 The purchased parts selected for the mixer shall comply with the specifications of the relevant standards and have a quality certificate. 3.1.3 The electrical system shall comply with the provisions of GB/5226.1. 3.1.4 All welds of the sand mixer shall be smooth and shall not have defects such as pores, cracks, etc., and shall comply with the provisions of ZBc150008.2. 3.1-5 The pneumatic system of the sand mixer shall comply with the relevant provisions of GB7932. 3.6 The moving parts of the sand mixer shall have safety protection devices, and the safety protection shall comply with the provisions of JB5545. 3.1. The surface of the mixer shall not have obvious bumps and pores. 3.1.8 All pneumatic and liquid conveying channels shall be aligned, and the curved parts shall be smooth. The design of the sand mixer shall comply with the provisions of JH/T5364. 3.1.10 The front label of the mixer shall be fixed in a conspicuous position and comply with the provisions of GBT10. The preparation of technical documents for machine control and spare parts shall comply with the provisions of BJ50005. All parts in the curing agent delivery system shall be made of materials suitable for the curing agent. The delivery system of the curing agent shall not have blockage and leakage. The Ministry of Machinery Industry issued the 19th batch of 117th batches of 1997-03-01 implementation of JB/T849796 3.1.15 The delivery system of the resin and curing agent shall have a filter device. 3.1.16 The bearings of the mixer shall have good lubrication and the lubricating oil channel shall be unobstructed. 3.1.1 The clearance between the sand blade and the inner surface of the sand mixing ball (including the door) shall not be greater than 3mm for the mixer with a sand mixing amount of less than or equal to 5g each time. For the sand mixing machine with a sand filling amount of more than 50g each time, it shall not be greater than 5mm. 3.1. During the mixing of sand, the hardness of the deep layer of the sand pile should not be less than 60HR. 3.2 Requirements for idle operation
3.2.1 Manually operated wet sand machine + each action should not be less than 10 times: single cycle sand machine should not be less than 10 times: the continuous operation time of the open cycle mud sand machine should not be less than 2h, 3.2.2 The operating system of the mixer should be flexible and convenient, and the action and interlocking of the electrical system should be safe and reliable. 3.2.3 The pneumatic system should be flexible, accurate and should not sift air. 3.2.4 All actions should be accurate and reliable, and there should be no abnormal belt or sound. 3.2.5 The movement of the sand gate should be flexible, accurate and reliable. 3.2.6 There should be no obvious impact when the sand outlet door is opened and closed. 3.3 Requirements for load operation
Before the load-free operation test, the system must be tested for idle operation. 3.3.! Under the rated production rate, the sand machine should run continuously for no less than 1h. 3.3.2 The manual operation mode of the machine should be used, and the action sequence of single cycle automatic operation and automatic cycle frequent operation should be correct. 3.3.3 There should be no leakage after the outlet door is closed. 3.3.4 There should be no sand overflow during the leakage process of the sand machine. 3.3.5 When adding the standard oil, the oil should splash onto the surface of the guide vane and the ball. 3.3.6 The control noise of the mixer should not be greater than 80dB (A). 3.3.7 The relative error of the raw sand added to the plate should not be greater than 3.3.3. The relative error of the resin injection should not be less than 1.5%. 3.3.9 The relative error of the amount of curing agent added should be greater than 1.55%. 3.3.10 The relative error of the uniformity of the mixed sand should not be greater than 4%. The production of the sand mixer should meet the design requirements. 3.3.15
4 Trial method
4.3 The production of the melting machine is determined according to the heat determination of 1.2. 4.2 Determination of the relative error of the amount of raw sand) Disconnect the feeder and curing agent, add the raw sand to the specified amount, and after the sand machine enters the single cycle, take the raw sand, and measure each time it is added. A total of five times
\) Calculate the relative error of each addition using the formula (1): E
Formula: - Relative error of each addition m, - Each amount of curing agent, kg
State "arithmetic mean value of the amount of one or five times added, kg.e>Determination
Take: the maximum value of the single pair value is the tree pair error of the raw sand added to the mixer: 4.3 Determination of the relative error of resin and curing agent 4.3.1 Disconnect the adding system, adjust the super grease and shielding agent to 1.2% and (.6% of the original silicon addition amount respectively. After the sand mixer enters the single cycle 2
JB/T8497-96
, take the resin or curing agent, weigh out the flux of the grease or curing agent, and measure the total amount of jade drink, 4.3,? Calculate and judge according to 4.26>,1.&) judgment. 4.4 Determination of relative error of mixing
4.4.1 Working point material
Source sand: degree of difference 2:
Resin, type , the concentration is 0.1~0.8P%, the amount of curing agent is 1.5% of the original effective amount: toluene sulfonate is used as a water trap, and the resin is added 50 times. 4.4.2 Second sample preparation
According to the production rate and process requirements of the mixing machine, the mixing time and working cycle period of each material are adjusted to the specified value. After the machine enters the automatic cycle, from the third cycle to the end of the third cycle, five sand bars with a mass of 3 (accurate to 0.1%) are randomly placed in the porcelain boat with a surface support, 4.4.3 Sand baking
The porcelain body containing each sand is placed in a high temperature protection, and the temperature is raised to 1000-1050℃. Keep it warm for 3cm under the temperature reduction, take out the car to dry and cool it to the point where it leaks. Take the sample of the average fired quality (accurate to 0.1) 4.4.4. Calculate the relative error of sand quality by the following steps: a) The sand loss is calculated by formula (2):
Where: 1) The initial loss of sand
and 2) The mass of sand sample before burning,
m, and the mass of the sample after burning for one second, g; 3) The average loss of binder in sand sample is calculated by formula (3): Q, the amount of binder consumed in the sample for one second, %; Q, the original amount of sand burned, 5%,
) The average loss of binder in each sample is calculated by formula (4):
Where: Q is the average loss of binder in each sample, d) The relative error of sand quality is calculated by formula (5): Q
Where: Q is the relative error of sample quality. 4.4.5 Determination
4.4.5.1 The absolute value of the relative error of each sand sample shall be the maximum value of the relative error of the sand mixture. -(2)
4.4.5.2 If there is any disagreement in the results of the two determinations, the standard species specified in 2J31006 may be used for the standard determination, and the inspection results shall be used as the judgment
4.5 If there are special requirements for the indicators to be measured, the supplier and the buyer can negotiate for the determination. 5 Inspection rules
5.1 Factory inspection
5.1.1 Each source sand machine shall be inspected and qualified by the manufacturer before it can be shipped. 3
JB/T 8497--96
5.1.2 The inspection items for the mixed mixture shall be in accordance with the provisions of 3.1, 3~~3.1.t8 and 3.2. 5.2 Type inspection
5.1 Type inspection shall be conducted in any of the following cases: a) When a new product is replaced by an old product! When the product is tested for production; b) After formal production, if there are significant changes in structure, process, or materials that may affect the performance of the product; during normal production, it shall be conducted once every three years; ) When the production is stopped for more than one year; when normal production is resumed; ) When the inspection result is significantly different from the last type inspection; ) When the national quality supervision and inspection agency proposes a requirement for type inspection. During type inspection, two products shall be randomly selected from the products that have passed the factory inspection, and no less than ten units shall be inspected each time. 5.2.3
Type inspection shall be conducted on all items specified in this standard. 5.2.3
6 Marking, packaging, transportation and storage
6.1 The installation of the mixer shall comply with the provisions of ZBJ5014. 6.3 The storage and transportation diagrams of the sand mixer shall comply with the provisions of GB191. The sand mixer shall comply with the relevant regulations on railway, road, waterway transportation and mechanized cutting.
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