The whole set heat treatment line is composed of :
Automatic Feeding Machine →Front Washer→ Hardening Furnace → Oil quenching tank →
Rear Washer → Tempering furnace→Electric Control Cabinet, etc.
The buyer can compose the treatment line flexiblely due to different demands.
Continuous Wire-Mesh Belt Conveyor & Gas Controlled
Heat-Treatment Furnace(9-800*10000*100 mm )
Buyer's Technical Requirements
1)Products and material: Cold forged/Hot forged fasteners made of SCM440/435,AISI 15B41,15B25 and other alloy steel material.M6 DIA to M30 DIA, Long 10mm to 350mm and equal inch sizes as well.
2)Capacity : Low/Medium carbon alloy steel products @ 800-1000kgs / hr
3)Hardness band: +/- 2 HRC @800- 1000kgs/ hour in both hardening & tempering
4)CP variation : +/- 0.03
2. Furnace composition
1) Magnetic belt type feeder
2) Weight device
3) Front degreasing & washing tank
4) Dephosphating tank
5)Front degreasing & washing tank with drying
6) Continuous bright carburizing quenching furnace(main furnace)
7) Quenching cooling oil tank
8) Dumping device
9) Rear degreasing & washing tank with blower
10) Tempering furnace
11)Double layer dyeing tank with drying device
12) Oiling machine
13) Electric control cabinet
During production the output power of hardening furnace is about 50%---60% of the rated power while the output power of tempering furnace is about 40%-50% Of the rated power.
3. Main features about Equipment
1) The rated power: about 660KW, Auxiliary Power: about 150KW.
Carburizing quencing Furnace=410KW,Tempering Furnace=250KW.
2) The Length of the whole equipment is about 66 meters
3) Total weight: about 78 tons
4) Facilities Parameter: three-phase current, input power voltage of 415V±5% and
50Hz frequency. 220-250V 50Hz frequency
5) Carburizing quenching Furnace 820ºC---920ºC, Quenching cooling oil Tank 60-80ºC, Tempering Furnace 300ºC---650ºC,Dephosphating tank 70-90ºC,degreasing & washing tank 60-80ºC
4.2 Front degreasing &washing tank
This device is open structure. The work pieces soak in the hot water to clean the oil and impurities. It is composed with the degreasing tank, driving system, spray system, oil-water separator skimmer, filter unit etc.
4.3.Degreasing tank
This device is open structure. This device is composed with Dephosphating tank,
transmitting belts, reduction gear, chain, chain wheel, transducer. The dimensions of
tank can be choosed by capacity of treating work pieces. The heating device,
transmitting belts, chains are adopts SUS304 stainless steel. The work pieces
which in the feeding machine drop into the dephosphating tank equably to wipe out
the oxide of work pieces 's surface ,by this the surface of work pieces are smmoth. Then work
pieces are send to washing machine by transmitting belts for cleaning the raffinate.
4.4. Front degreasing & washing tank with drying
This device is open structure. The work pieces soak in the hot water to clean the oil and impurities. It is composed with the degreasing tank, driving system, spray system, oil-water separator skimmer, filter unit etc.
4.5. Continuous bright carburizing quenching furnace(main furnace)
This kind of carburizing Furnace is the main device of the production line, it is mainly composed of furnace cover, mesh belt conveyor system, roller transmission, heat preservation material, heating elements, furnace fan circulating device, gas cracking control device, work pieces dropping device and temperature control device.
4.9. Tempering furnace
The tempering furnace is composted of cover, feeding shelf, wire mesh belt driving
device, material of hot insulation, heating apparatus, circulating fan apparatus,
discharging rack, and Temperature control apparatus. There are 5 high speed
mixing fans on top of furnace, which can make the convection current to ensure the
temperature uniformity inside the furnace, small hardness balance of work pieces and
color uniformity after tempering.
In order to avoid the large temperature drop, We make the power density of first zone
and second zone closely. The belt drive transmitting by Cycloidal Pin Gear Speed
Reducer.
| Model |
Power(kw) |
Total power(kw) |
Working Temp. |
Working Dimension(mm) |
length ofWorking Area(mm) |
Capacity(kgs/h) |
| 9-40*320*8 |
80 |
160-180 |
950 |
400*3200*80 |
23000 |
hardening 150,
carburizing 60 |
| 9-50*470*8 |
120 |
220-250 |
950 |
500*4700*80 |
25000 |
hardening 300,
carburizing 150 |
| 9-60*600*8 |
220 |
400 |
950 |
600*6000*80 |
38000 |
hardening 450,
carburizing 220 |
| 9-80*600*8 |
240 |
450 |
950 |
800*6000*80 |
38000 |
hardening 150,
carburizing 60 |
| 9-100*600*8 |
300 |
480 |
950 |
1000*6000*80 |
37000 |
hardening 700,
carburizing350 |
| 9-100*1000*8 |
460 |
800 |
950 |
1000*10000*80 |
51000 |
hardening 1300,
carburizing 7500 |
| 9-120*1350*8 |
950 |
1800 |
950 |
1200*13500*80 |
60000 |
hardening 2500,
carburizing 1350 |
Automatic multi-station Cold Bolt Former is a specialized machine tool with high efficiency and automation among forging machinery. Cold forging technique and automatic cold forging formers are used as an important means for producing different kinds of bolts, screws, rivets and nuts in the field of fastener industry. Because of the advantage of the cold forging equipment itself and the superiority of cold forging technique, the formers also are widely used in different national economic territories for producing fasteners and abnormal non-standard parts such as aviation steamer, machinery, rail traffic, vehicle, motorcycle, bicycle, sewing machine, construction, furniture, light industry and daily necessities, etc.
Our company comes from China National Machinery Import and Export Corp. Harbin branch. The main business is manufacturing cold forging machine, such as Bolt Maker, Nut Maker, Part Former, Heading Machine, Thread Rolling Machine, Wire Drawing Machine and Mesh Belt Furnace, etc.
We have established reputation in countries such as India, US, Europe and Southeast Asia where we have core customer bases. Meanwhile, we are well respected by the domestic factories and the customers in the mechanical and electrical business.
Audited Supplier 
Automatic multi-station Cold Bolt Former is a specialized machine tool with high efficiency and automation among forging machinery. Cold forging technique and automatic cold forging formers are used as an important means for producing different kinds of bolts, screws, rivets and nuts in the field of fastener industry. Because of the advantage of the cold forging equipment itself and the superiority of cold forging technique, the formers also are widely used in different national economic territories for producing fasteners and abnormal non-standard parts such as aviation steamer, machinery, rail traffic, vehicle, motorcycle, bicycle, sewing machine, construction, furniture, light industry and daily necessities, etc.
){kind=link}