JB/T 2093-1999 This standard is a revision of JB 2093-77 "Basic Parameters of Hot Billet Shearing Machines". During the revision, only editorial changes were made according to relevant regulations, and the main technical content remained unchanged. This standard specifies the basic parameters of hot billet shearing machines. This standard is applicable to shearing machines that shear square billets, slabs and profiled billets horizontally in a hot state. This standard was first issued in 1977. JB/T 2093-1999 Basic Parameters of Hot Billet Shearing Machines JB/T2093-1999 Standard download decompression password: www.bzxz.net

ICS25.120.20
Machinery Industry Standard of the People's Republic of China
JB/T2093-1999
Hotshears-Basicparameters
Published on 1999-06-28
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T2093-1999
This standard is a revision of JB2093-77 "Basic parameters of hot steel shears". Only editorial changes were made to the original standard during the revision, and the main technical content remained unchanged.
This standard replaces JB2093-77 from the date of implementation. Appendix A of this standard is a reminder appendix.
This standard is proposed and managed by the Technical Committee for Standardization of Metallurgical Equipment. The drafting unit of this standard is Shenyang Heavy Machinery Group Co., Ltd. The main drafter of this standard is Duan Liyan.
This standard was first issued in 1977.
1 Scope
Machinery Industry Standard of the People's Republic of China
Hotshears-Basicparametars
This standard specifies the basic parameters of hot steel shears. JB/T2093-1999
Replaces JB209377
This standard applies to shears that shear square, plate and special-shaped steel in a hot state (the steel ring does not move longitudinally during the shearing process). 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 versions of the following standards. GB/T321—1980
Priority number and priority number system
3 Basic parameters
The basic parameters of hot steel shearing machine shall comply with the provisions of Table 1. Table 1
Maximum shearing force
(20000)
Blade stroke
Opposite side
1 Parameters in brackets should not be used as much as possible.
Plate
Blade length
Maximum width of flat
Blade section size
30×80
40×120
50×150
60×180
70×180
70×210
80×240
90×270
100×300
100X300
2For hot steel shearing machine with maximum shearing force greater than 25000KN, the maximum shearing force parameter should be selected in accordance with the R10 series in GBT321. 3For the theoretical stroke times of hot steel shearing machine, see Appendix A (Reminder Appendix). Approved by the State Bureau of Machinery Industry on June 28, 1999, and implemented on January 1, 2000
JB/T2093-1999
Appendix AbzxZ.net
(Suggested Appendix)
Theoretical idle stroke times
The theoretical stroke times of hot steel shearing machines are recommended to be selected according to Table A1. A1
Maximum shearing force
Theoretical idle stroke times
times/min
1Theoretical idle stroke times are the continuous stroke times of the shearing machine. Most hot steel shearing machines with a capacity of 2500
22500kN and below use AC motors with clutches. Their theoretical idle stroke times are a fixed value within the range listed in the table. It is recommended to develop towards the upper limit. Hot steel shearing machines above 34000kN mostly use DC motor to start and stop shearing. The theoretical number of idle strokes is the number of continuous idle strokes of the shearing machine within the available speed range of the DC motor (suitable for shearing steel). 2
Mechanical Industry Standard
Basic Parameters of Hot Steel Shearing Machine
JB/T2093—1999
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×12301/16 Printing Sheet 1/2 Number of Words 6000First Printing in December 1999
First Edition in December 1999
Print Quantity 1-500
Price 500 Yuan
No. 99-1164
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn666607
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