Description
Jiangsu Liangyi is professional manufacturer of 9H2MF,9Ch2MF,9Х2МФ open die forging parts and seamless rolled steel forged rings from china
Following is the shape of 9H2MF,9Ch2MF,9Х2МФ forging steel material that we could do is:9H2MF Forged Steel round bars square bars Flat bars Rectangles Bars Rods,9H2MF,Forged forging steel rings seamless rolled rings,9Х2МФ Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,9H2MF forging forged steel Forged Forging Steel Cold mill work rolls roller straightening rolls roller, back-up rolls Rollers Leveller rolls rollers,9Х2МФ Forged Forging Steel Discs Disks Blocks plates,9H2MF Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.
9H2MF,9Ch2MF,9Х2МФ is Tool steel for cold work with high wear resistance and low crack sensitivity
9H2MF,9Ch2MF,9Х2МФ is normally used in
Standard cold rolled steel for rolls of all dimensions, backup and work rolls, straightening rolls, journals, shafts, roller bodies.
FOllowing is melting methods for 9H2MF,9Ch2MF,9Х2МФ forged rolls as per client choices
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
Chemical composition of 9H2MF,9Ch2MF,9Х2МФ forging shafts is as following
C 0,85 - 0,95
Si 0,25 - 0,5
Mn 0,2 - 0,7
Ni max 0,5
S max 0,03
P max 0,03
Cr 1,7 - 2,1
Mo 0,2 - 0,3
V 0,1 - 0,2
Fe 95
Heat treatment way of 9Х2МФ forging steel rolls is as followings
Softening annealing below Ac1 w temperature 690 - 710℃ with cooling in a box, ash or sand
Softening annealing above Ac1 w temperature 750 - 770℃ with cooling in a furnace up to 600℃ with max. of 20℃/h
Softening annealing above Ac1 at 750 - 770 ℃ with cooling with isothermal conversion at 670 - 710 ℃
Hardening at 810 - 850℃ with cooling in oil Tempering at 100 ℃ in the air
Hardness of 9Х2МФ forged rolls in softened condition < 229 HB, after hardening and tempering min. of 62 HRC
Hardness of 9Х2МФ win softened condition < 248 HB, after hardening and tempering min. of 62 HRC
All our finished 9H2MF,9Ch2MF,9Х2МФ forged parts will have NDT UT & MT result within the mill cert. NDT shall follow below criteria:
NDT Ultrasonic:
· The forging shall not have any UT indication greater than 0.039” (1 mm)
· All detected indications must be separated at least 2” (51 mm) in all directions.
NDT Magnetic Particle
· No linear indications.
· No stringers in excess of 1 mm (0.039”) length in all coupling fits and bearing journals.
· No stringers in disk bores or blade root areas.
· No stringers in excess of 1 mm (0.039”) length in all other areas
ALl our finished 9H2MF,9Ch2MF,9Х2МФ forged rolls should be delivered to the customers with a certificate. In the certificate the following
details should be specified:
1) heat No. (for ESR and VAR metal - original heat No. and remelting heat No.);
2) blank No.;
3) order No.;
4) drawing No.;
5) these specifications' No.;
6) steel grade;
7) steel melting and pouring practice;
8) chemical composition;
9) content of hydrogen in metal for blanks with a more than 500 mm diameter made without degassing while pouring (as required by the consumer);
10) mechanical and hardness test findings (with indication of sampling locations);
11) macrostructure test findings;
12) ultrasonic test findings;
13) residual stresses;
14) periscopic test findings;
Welcome your inquiry of 9H2MF,9Ch2MF,9Х2МФ forging parts
Following is the shape of 9H2MF,9Ch2MF,9Х2МФ forging steel material that we could do is:9H2MF Forged Steel round bars square bars Flat bars Rectangles Bars Rods,9H2MF,Forged forging steel rings seamless rolled rings,9Х2МФ Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,9H2MF forging forged steel Forged Forging Steel Cold mill work rolls roller straightening rolls roller, back-up rolls Rollers Leveller rolls rollers,9Х2МФ Forged Forging Steel Discs Disks Blocks plates,9H2MF Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.
9H2MF,9Ch2MF,9Х2МФ is Tool steel for cold work with high wear resistance and low crack sensitivity
9H2MF,9Ch2MF,9Х2МФ is normally used in
Standard cold rolled steel for rolls of all dimensions, backup and work rolls, straightening rolls, journals, shafts, roller bodies.
FOllowing is melting methods for 9H2MF,9Ch2MF,9Х2МФ forged rolls as per client choices
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
Chemical composition of 9H2MF,9Ch2MF,9Х2МФ forging shafts is as following
C 0,85 - 0,95
Si 0,25 - 0,5
Mn 0,2 - 0,7
Ni max 0,5
S max 0,03
P max 0,03
Cr 1,7 - 2,1
Mo 0,2 - 0,3
V 0,1 - 0,2
Fe 95
Heat treatment way of 9Х2МФ forging steel rolls is as followings
Softening annealing below Ac1 w temperature 690 - 710℃ with cooling in a box, ash or sand
Softening annealing above Ac1 w temperature 750 - 770℃ with cooling in a furnace up to 600℃ with max. of 20℃/h
Softening annealing above Ac1 at 750 - 770 ℃ with cooling with isothermal conversion at 670 - 710 ℃
Hardening at 810 - 850℃ with cooling in oil Tempering at 100 ℃ in the air
Hardness of 9Х2МФ forged rolls in softened condition < 229 HB, after hardening and tempering min. of 62 HRC
Hardness of 9Х2МФ win softened condition < 248 HB, after hardening and tempering min. of 62 HRC
All our finished 9H2MF,9Ch2MF,9Х2МФ forged parts will have NDT UT & MT result within the mill cert. NDT shall follow below criteria:
NDT Ultrasonic:
· The forging shall not have any UT indication greater than 0.039” (1 mm)
· All detected indications must be separated at least 2” (51 mm) in all directions.
NDT Magnetic Particle
· No linear indications.
· No stringers in excess of 1 mm (0.039”) length in all coupling fits and bearing journals.
· No stringers in disk bores or blade root areas.
· No stringers in excess of 1 mm (0.039”) length in all other areas
ALl our finished 9H2MF,9Ch2MF,9Х2МФ forged rolls should be delivered to the customers with a certificate. In the certificate the following
details should be specified:
1) heat No. (for ESR and VAR metal - original heat No. and remelting heat No.);
2) blank No.;
3) order No.;
4) drawing No.;
5) these specifications' No.;
6) steel grade;
7) steel melting and pouring practice;
8) chemical composition;
9) content of hydrogen in metal for blanks with a more than 500 mm diameter made without degassing while pouring (as required by the consumer);
10) mechanical and hardness test findings (with indication of sampling locations);
11) macrostructure test findings;
12) ultrasonic test findings;
13) residual stresses;
14) periscopic test findings;
Welcome your inquiry of 9H2MF,9Ch2MF,9Х2МФ forging parts
