JB/T 1993-1999 This standard is a revision of JB 1993-76 "Permanent Magnetic Roller". During the revision, only editorial changes were made according to relevant regulations, and the technical content has not changed. This standard specifies the product classification, technical requirements, test methods, inspection rules, signs, labels, instructions, packaging, transportation and storage of permanent magnetic rollers. This standard applies to permanent magnetic rollers. The machine is mainly used for dry separation of strong magnetic ore with a specific magnetic susceptibility of not less than 3000×0.000001cm3/g, and can also be used to remove magnetic substances from materials, such as removing iron nails from foundry sand. JB/T 1993-1999 Permanent Magnetic Roller JB/T1993-1999 Standard download decompression password: www.bzxz.net

ICS73.120
Machinery Industry Standard of the People's Republic of China
JB/T1993-1999
Permanent magnetic drum
Permanent magnetic drum
Published on 1999-06-28
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T1993—1999
This standard is a revision of JB199376 "Permanent magnetic drum". During the revision, the original standard was edited, and the main technical content remained unchanged
This standard replaces JB1993—76 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The responsible drafting unit of this standard: Shenyang Mineral Processing Machinery Research Institute. The main drafters of this standard: Xu Yongshan, Zhang Li, Li Jun, Liu Yuheng, Huang Jialin. 1 Scope
Machinery Industry Standard of the People's Republic of China
Permanent magnetic drum
Permanent magnetic drum
JB/T1993—1999
Replaces JB19931999
This standard specifies the product classification, technical requirements, test methods, inspection rules, signs, labels, instructions, packaging, transportation and storage of permanent magnetic drums.
This standard applies to permanent magnetic drums. The machine is mainly used to select strong magnetic minerals with a specific magnetic susceptibility of not less than 3000×10cm/g, and can also be used to remove magnetic substances from materials, such as removing iron nails from foundry sand. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB191—1990
GB/T6388—1986
GB/T9969.1—1988
GB/T133061991
JB/T16041998
JB/T 9042—1999
3 Product classification
3.1 Type
Packaging, storage and transportation pictorial signs
Transport packaging, receiving and issuing signs
Industrial product instructions
Method for compiling mining machinery product models
Permanent magnet blocks for mineral processing equipment
The polarity of permanent magnetic rollers should be arranged in a circular pattern, that is, the polarity is arranged alternately along the circumferential direction and the polarity is the same along the axial direction. 3.2 Model
The model representation method should comply with the provisions of JB/T1604. C
3.3 Marking example
Drum length, dm (rounded)
Drum diameter, dm (rounded)
Magnetic roller
Magnetic separation equipment
The permanent magnetic roller with a drum diameter of 800mm and a cylinder length of 950mm is marked as: CT-89 permanent magnetic roller
Approved by the State Machinery Industry Bureau on June 28, 1999 and implemented on January 1, 2000
3.4 ​​Basic parameters and dimensions
JB/T1993-1999
The basic parameters and dimensions of permanent magnetic rollers shall comply with the provisions of Table 1. Table 1
Parameter name
Corresponding tape width mm
Magnetic induction intensity on roller surface KT
Selected particle size
Calculation processing capacity h
Maximum torque N·m
Note: For calculation processing capacity, the speed is 1ms and the bulk density coefficient is 2.4 Technical requirements
CT-811
10~100
CT-814
CT-816
Permanent magnetic rollers shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. The circumferential speed of the roller surface shall not exceed 1.5m/s. The cylinder is made of non-magnetic material with a roundness tolerance of 2mm. Plates are allowed to be butt-jointed, but the transverse welds must be ground flat. The yoke of the permanent magnetic roller is made of 08 steel. The quality of the magnetic block should comply with the provisions of JB/T9042. The surface of the magnetic system should be flat, and its flatness tolerance should not be greater than 1mm. The assembled magnetic blocks should be fixed (or bonded) firmly with bolts. Before assembling the magnetic system, each stack of magnetic blocks must be magnetized. If the magnetic blocks are folded and replaced, they must be magnetized before they can be used. All parts must be inspected and qualified, and purchased parts must have a quality certificate before they can be assembled. 5 Test method
After the magnetic system is assembled, the magnetic induction intensity should be measured: a) Measure three cross sections on the magnetic system, one section is taken in the middle (point B), and the other two sections are taken at 125mm from both ends (points A and C), (see Figure 1):
b) Take 20 measurement points on each section (see Figure 2): B
JB/T1993-1999
c) Use a Tesla meter with an accuracy level of not less than 2.5 to measure point by point. 6 Acceptance rules
6.1 Inspection classification
Permanent magnetic rollers are divided into factory inspection and type inspection. 6.2 Factory inspection
6.2.1 Permanent magnetic rollers must be inspected and qualified by the quality inspection department of the manufacturer before they can be shipped. Documents proving the quality of the product should be attached when leaving the factory.
6.2.2 Factory inspection of the following items:
a) Completeness and correctness of the requirements for the structure of the permanent magnetic roller; b) 4.2, 4.3, 4.7 and the magnetic induction intensity of the roller surface in Table 2. 6.3 Type inspection
6.3.1 The permanent magnetic roller shall be subjected to type inspection in any of the following cases: a) When new products or old products are transferred to the factory for production appraisal; b) After normal production, when the product structure, materials and process have been greatly changed; c) When the product is resumed after a long period of suspension; d) When the results of the factory inspection are greatly different from the last inspection; When the national quality inspection agency puts forward the type inspection requirements. e)
6.3.2 The type inspection items shall include all the requirements of this standard. 6.3.3 The type inspection shall be conducted on one unit selected from the products that have passed the factory inspection. If the inspection fails, double sampling shall be conducted. 7 Marking, labeling and instruction manual
The permanent magnetic roller shall be equipped with a product label in an appropriate and obvious position. Its type and size shall comply with the provisions of GB/T13306 and indicate the following contents:
a) Manufacturer name and trademark;
b) Product name and model;
Main technical parameters:
1) Processing capacity:
2) Magnetic field strength;
3) Weight;
d) Factory number;
e) Manufacturing date.
7.2 The permanent magnetic roller shall be equipped with a product instruction manual, the contents of which shall comply with the provisions of GB/T9969.1. 7.3 The packaging mark of the permanent magnetic roller shall include the shipping packaging receipt and delivery mark, the packaging storage and transportation pictorial mark, and shall comply with the provisions of GB/T6388 and GB 191.
Packaging, transportation and storage
8.1 Permanent magnetic rollers are packed in lattice boxes and should meet the requirements of land and water transportation. 3
JB/T1993-1999
2 The packaging of permanent magnetic rollers should be accompanied by the following documents: 8.2
a) Product general drawing and installation drawing;
b) Product instruction manual;
Product certificate or quality certificate;
Packing list.
The outer wall of the packing box should have obvious text markings and should comply with the provisions of 7.3. The contents include a)
Name of the receiving station and the receiving unit:
Name of the shipping station and the shipping unit:
Contract number and product name and model;
Gross weight, net weight, box number and overall dimensions; center of gravity, lifting line, storage and transportation diagram signs
Permanent magnetic rollers should be stored in warehouses or under canopies. 8.4
Mechanical Industry Standard
Magnetic Roller
JB/T1993—1999
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
Sheet 1/2bzxZ.net
Word Count 10000
First Edition in August 1999
First Printing in August 1999
Print Quantity 1-500
Price 500 Yuan
99-078
666661 /
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