Heat Treated Steel Bar And Tube
HEAT TREATED STEEL BAR AND TUBE
Heat treated steel bar is produced by heating and cooling in different temperature based on the steel grades to improve the steel bar mechanical properties or machinability for various industrial applications. Heat treated steel bar includes annealed steel bars, Normalized Steel Bar, quenched and temper qt steel bar.
Annealed Steel Bar has better ductility and lower hardness, which can be easier to be machined. The annealing processing is usually widely used for steel grade with higher carbon content above 0.5%. However, some low carbon steel also requires to do annealing for special usage such as 20CrMnTi gear steel. For some special material such as 20CrMnTi gear steel and GCr15 such bearing steel, spheroidizing annealing is often required.
Normalized steel bar sometime is also one kind of annealing processing. It mainly changes the grain to remove the impurities in steel and improves the strength and hardness. For some hot rolled steel bars, to keep the basic mechanical properties, normalizing is often used.
Quenching and Tempering, abbreviated as Q&T is a king of processing that strengthen or harden steel bars by heating the materials and then cooling in water, oil or other liquid medium, that rapidly the change from austenite to perlite to get the proper properties for various usage. The quenched & tempered steel bar materials are usually with carbon from 0.30% - 0.60%, it is widely used as merchant bars in components of various machines.
Our advantages on producing heat treated steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of Cold Drawn Steel Bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
4140 steel tube,Round Steel Tubing,Heat Treated Steel Tube,Heat Treated Steel Bar And Tube,S355JR steel tube SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdthreadedrods.com
                         Dry roll press granulator machineÂ
        Our company  offers a wide range of machine sizes for high pressure granulating, which covers nearly all requirements of the clients.If your production is low,you can choose small type machine, if you have high production, you can choose one or more sets of machines according to your requirements.And certainly the process of granulating is dry.
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         Working principle Â
      Raw materials are sent into hopper by quantitative feeder, compactors use the pair of roller with the hole roll,leaving certain gap and rotation with the same speed reversely. Shaft holders of one group of rolls are fixed, and the other one of group can slide to help the hydraulic cylinder press the rolls for abutting closely against each other. Many arc grooves with the same shape and size are arrayed regularly on the roll surface. In accordance with different compressing ratios of target materials, the wave though of arc groove of one roll shall be directed at that of one roll. When two rolls parallel each other horizontally, powder grained materials are, continuously and evenly fed in the gap between two rolls by means of their gravities and through a forced charger from above of two rolls. After entering the nip area, the materials are gradually nipped by the rolls. With continuous rotation of the rolls, the space that the materials occupy reduces gradually and is compressed step by step and reaches the maximum shaping pressure. And then, as the pressure reduces gradually later, pressed blocks drop off the arc grooves of the rolls for recovered elasticity and gravity of the flaking machine and enter a crushing device for crushing and then enter a sieving device for sieving. At last, grained products are obtained. The powder materials and large particles which are substandard will return to bucket elevator and enter into the next process with new products.
Technical Parameters
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ModelDH240
DH360
DH450
DH650
DH850
Roller diameter(mm)
240
360
450
650
850
Valid usable width(mm)
80
170-230
190-280
290-330
380-450
Roller speed(rpm)
15,20,26,32
14,18,24,30
10-25
10-25
10-25
Max forming pressure(KN)
320
800
1300
2100
2900
Max rolled sheet thickness(mm)
4
8
12
16
25
Rolled sheet output*(kg/h)
300
1600
3000
6000
10000-16000
Granular size(mm)
2-5
2-5
2-5
2-5
2-5
Finished product output*(kg/h)
180
900-1300
1800-2500
3500-4000
6000-8000
Main unit power(KW)
45
37
55
110
220
Total installed capacity(KW)
20
55
90
175
298
External dimension(mm)
1500*1300*2500
2350*2000*2600
2600*2200*2900
3600*2800*3200
4200*3500*3500
Total weight(t)
7
10
15
25
33
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Applicable examples
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Applicable examples
Name of material
Specification
Granular size(mm)
Output(kg/h)
Potassium chloride, Russian red potassium
DH360
2.0~4.75
1000~1500
DH450
2000~2600
DH650
3200~4500
Potassium sulfate
DH360
2.0~4.75
1000~1300
DH450
2000~2500
DH650
3000~4500
NPK fertilizer
DH360
2.0~4.75
900~1500
DH450
1800~2600
DH650
3000~4500
Ammonium chloride
DH360
2.0~4.75
800~1000
DH450
1800~2500
DH650
3100~4600
Ammonium sulfate
DH360
2.0~4.75
800~1000
DH450
1800~2500
DH650
3100~4600
Cryolite
DH360
2.0~6.0
1000~1500
DH450
2000~2600
DH650
3200~4500
Antioxidant
DH360
0.3~2.0
300~400
Zinc oxid
DH360
1.5~2.5
350~500
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DH360
1.5~6.0
800~1000
Steel making flux
DH360
Olive shape
1000~1200
Snow melt agent
DH360
2.0~7.0
800~1000
Bromine chlorine hydantotin
DH240
1.5~6.0
~300
Medical intermediate
DH240
0.5~2.0
~200
Environment protection
DH240
8.0~15.0
~500
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  Parts of one whole set of granulating line
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     1.Pre-feeder
Equipped with mechanical vibrating feed hopper with automatic control and timing vibration.
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     2.Quantitative feeder
Adopts frequency conversion adjusting speed to ensure the feeding accuracy.
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     3.Force-feeding screw hopper
It is composed of variable frequency motor, cone helix, stirring knife tooth and cone feeding hopper with visual glass window as well as feeding mouth assemblies and so on. Its function is to further achieve degassing and perform pressure feeding.
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    4.Flaking machine
It is composed of left and right fixed bearing seats, frame structure, two alloy steel rollers, two hydraulic oil cylinders, electric automatic pump station as well as hard tooth surface dedicated reducer and main driving motor.
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    5.Crushing & granulating machine
It is composed of cutting-up box, cutting-up main shaft and special rotating cutting blades and the main shaft is driven at high speed by the motor to break the extrusion forming materials and dress into pellets.
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    6.Vibration screen
It is equipped with screen block-proof device and convenient to clean the screen. The broken pellet and powder materials from the breaking and dressing machine is divided into pellet product and recycling powder.
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    7.Material return auger
It sends the unaccepted powder material returned from vibration classification screen to the feeding elevator.
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    8.Bucket elevator
Upper and lower sprocket use assembly structure for the transportation of materials.
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    9.Control cabinet
It is composed of the electrical components such as electric control box, frequency conversion controller, ammeter, voltage meter, light, button switches, voltage switch and so on. All the electrical equipment is controlled and operated concentratedly.
Q:Do you provide the installation service after ordering your machines?
A:As for the single machine, we provide the users instruction.
    As for the production line,we provide the professional construction drawing, and arrange the engineer     guide the user install the machines.Help the user train the skilled workers.
Q:Can you be sure the wearing parts supply in future?
 A:We promise to provide the wearing parts to user in future.
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Q:How about the warranty of our machines?Â
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A:Our production line, and single machine's warranty is 1Â year.
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Q: Do you allow us to visit your factory for try some machines?
 A:We warmly welcome the clients to come to our factory for trying each machine.
24 Hours Contact Information: +8615295012502
www.fuyigz.com
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Strong structure dry roll press granulator for Potassium sulfate
Model NO.: DH series
Weight: 4-12 tons
Power(W): 55KW
Dimension(L*W*H): 2600*2200*2800
After-sales Service Provided: Engineers available to service machinery overseas
Roller material: CrMo
Working method: double rollers compacting the material
Application: Fertilizer granules compaction compactor machine
Hydraulic press: yes
Hardness: Greater than 30N
Voltage: Customized
Trademark: FUYI
Transport Package: Any Special Requirement, We Will Pack as Request.
Specification: CE
Origin: Jiangsu Changzhou
HS Code: 8474801000