JB/T 99779-1999 This standard is a revision of ZB J61 002-88 "Technical Conditions for Chain Shot Blasting Rooms". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies the technical requirements, test methods and inspection rules for chain shot blasting rooms, and briefly stipulates the marking, packaging, transportation and storage of chain shot blasting rooms. This standard is applicable to chain shot blasting. This standard does not apply to chain continuous shot blasting and sand dropping cleaning rooms. This standard was first issued in January 1988. JB/T 9979-1999 Technical Conditions for Chain Shot Blasting Rooms JB/T9979-1999 Standard download decompression password: www.bzxz.net

HS 77.180
Machinery Industry Standard of the People's Republic of China
JB/T9979-1999
Chain Shot Blasting Room
[999-05-14 Issued
National Machinery Industry Bureau
Technical Conditions
2000-01-01 Implementation
JB/T9979—1999
This standard is a revision of ZBJ61002—88 Technical Conditions for Chain Shot Blasting Room. During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. This standard replaces 2BJ61002—88 from the date of implementation. This standard was proposed and submitted by the National Standardization Technical Committee for Machinery Manufacturing. The responsible drafting unit of this standard is Qingdao Machinery Manufacturing Factory. This standard was first issued in January 1988.
Machinery Industry Standard of the People's Republic of China
Chain Shot Blasting Room
Technical Specifications
JAT99791999
100288
This standard specifies the technical requirements, test methods and inspection criteria of chain shot blasting rooms, and briefly stipulates the marking, packaging, transportation and storage of chain shot blasting rooms. This standard applies to the following shot blasting rooms (hereinafter referred to as machines). This standard does not apply to chain shot blasting rooms. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by being cited in this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision. Offices using this standard should explore the possibility of using the following standards as soon as possible to report new versions: GB/I5226.1—1996www.bzxz.net
JB/T1644—1551
JB/T 37[3.1 1999
JB.T 3713.2.-1997
IR/T5364—1991
JB/T 5365.7.--1991
JRT 6.1.31.2-1992
3 Definition
Industrial machinery electrical equipment Part 1: General technical specifications General technical specifications for foundry machinery
Basic parameters of double disc shot blaster
Technical conditions for double disc shot blaster
Sand treatment and cleaning equipment coating technical conditions Casting plate cleaning electric determination method for casting machine sound determination method for sound measurement 3.1 Shot: The medium for shot blaster and shot blaster to clean the parts. 3.2 Shot collection system: The system that collects the shot and then supplies it to the shot blaster, including frequency conveyor, elevator, distributor, etc.
3.3 Shot flow rate: The shot disc passing through a system in a unit room, such as the shot thrown by the shot blaster in a unit time, is called the shot flow rate of the shot system.
4 Technical requirements
4.1 General technical requirements
4.1.1 The machine shall comply with the provisions of this standard and JB/T1644, and shall be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 4.1.2 The shot blasting machine used by the machine shall comply with the provisions of JB/T3711.1 and JR3711.2. 4.1.3 The carbon coating of the machine shall comply with the provisions of JB/T5364. 4.J.4 The electrical system of the machine shall comply with the provisions of GB/T5226.1. 4.1.5 The number of shot blasting machines equipped with the machine shall not be less than 2. 4.1.6 The final structure of the cleaning space can be (according to the user's requirements) Install auxiliary devices for cleaning complex-shaped workpieces. Approved by Beijing Machinery Industry Bureau on May 14, 1999, implemented on January 1, 2000
JB/T9979—1999
4.1. The machine should be equipped with a hole for the reverse connection of the dust removal system or the dust removal system. 4.1. The production chain operation, dust removal system, and the liquid treatment of the pellets should have electrical interlocks. 4.1.9 The machine should have a protective curtain to prevent the pellets from falling out, a protective chain, and other safety devices to prevent the pellets from spreading. 4.1.10 The various signs on the machine should point correctly and be in the right position. 4.1.11 The lubrication and dust prevention of the sliding parts of the machine should be good. 4.1.12 The cleanliness limit of each reducer shall not be greater than 700mg4.1.13 The body shall be lined with a protective plate, and the replacement of the protective plate shall be convenient4.1.14 The running speed of the lifting chain shall be adjustable,4.1.15 The tensioning device of the lifting chain shall be flexible, and the adjustment stroke shall meet the requirements of the drawings.4.1.16
The joints of the lifting chain shall be flat, the position shall not be greater than 1.0mm, and the original distance between the joints shall not be greater than 2.5mm. The hardness of the wheel surface of the lifting chain trolley shall not be less than 40HRC. The self-softening of the lifting chest shall be uniform,
4.1.19 The allowable charge flow plate at any part of the machine projectile recovery system shall be greater than the total shot blasting area of ​​the shot blasting machine. The sand content in the projectile shall not be greater than 1.0%
4.1.20 Random accessories and spare parts shall be complete. 4.1.21 The random technical documents shall include the following contents: product manual, product certificate, packing list, etc. 4.2 Technical requirements for empty operation
4.1.1 The operation of the chain and the rotation of the joints shall be flexible and stable. 4.1.2 The operation of each motion mechanism shall be positive, and the shot blaster shall not have abnormal vibration. 4.2.3 The functions of each chain mechanism shall be changeable.
4.2.1 The electrical control system shall be coordinated, flexible and reliable. 4.2.5 The temperature rise of the rolling axis shall not exceed 35 degrees. 4.2. The joints of the parts and pipelines shall not be vibrated. 4.2.7 The machine noise shall not be greater than 90dB (A). 4.3 Technical requirements for load operation
4.3.1 The chain and hook shall operate smoothly and reliably under the maximum load (design requirements). 4.3.2 The shot supply system shall not have the phenomenon of shot slipping. The action of the shot supply room shall be flexible and reliable. 4.3.3 The shot blaster shall not have significant pilling and pilling phenomena. 4.3.4 The cleaning of the parts shall meet the design requirements. 4.3.5 The electrical control system shall be coordinated, flexible and reliable. 4.3.6 No projectiles fly out of the inlet and outlet of the chamber. 4.3.? The chamber shall be dust-free. The dust exhaust concentration of the machine through the atmosphere (referring to the provisions of "not exceeding 1mg/m after dust removal") shall not exceed 1mg/m3: 5 Test method
5.1 Idle operation test
5.1.1 Start the machine and conduct an empty operation test: 5.1.2 The operating speed of the movable chain shall meet the design requirements. 2
5.1.3 The empty operation time shall not be less than 2h.
5.1,4 According to the relevant provisions of 4.1 and 4.2 inspection. No. 2 Load operation test
JB/T9979-1999
5.2.1 Before the machine is put into load operation, an empty operation test must be carried out. .2.2 Load the workpiece according to the designed maximum load and carry out the load test. Check the relevant provisions of 4.1 and 4.3: 5.3 Shot blasting test of shot blasting machine: Adjust the shot supply gate so that the spring flow reaches the maximum shot supply amount within the allowable range of the machine motor power, then stop the shot, remove the funnel and shot inlet, and place a container under the shot supply gate. Open the north gate and the stopwatch at the test time, and close the nine chambers at 30 o'clock! ! Then weigh the net bean of the projectile in the container [converted to g/mn. Similarly, if the three shots are measured, take the arithmetic average carefully, and the shot blasting amount of each shot blasting machine must be measured. 6 Inspection rules
6.1 The machine must be inspected and qualified by the technical inspection department of the manufacturer and accompanied by the product quality certificate before it can leave the factory. 6.2 Each machine must undergo an empty operation test, and the machine with load operation test The number of units is 2% of each batch, but not less than 【, 6.3 Decontamination test specified in JB/T5365.1. 6.4 Production test specified in JB/T6331.2,
6.5 When the manufacturer is unconditional to conduct the whole machine assembly trial production, it is allowed to be carried out at the user's site, but the parts must be tested with no load before leaving the factory. Marking, packaging, transportation, storage
The marking, packaging, transportation and storage of the machine shall comply with the provisions of Chapter 1 of JBT1644-1991.
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