| Technical Information for Conical Twin Screw Barrel | |||
| Main Base materials | 1.38CrMoAlA (SACM645) | Main Alloy Materials | 1. Ni-based alloy/Deloro alloy |
| 2. SKD-61 (Special Tool Steel) | 2. Tungsten carbide/Wolfram carbide | ||
| 3. 42CrMo (Ultrahigh StrengthSteel) | 3. NiCo-based alloy | ||
| 4. DC53 (Cold WorkDie Steel) | 4. Fe-based alloy | ||
| 5. W6Mo5Cr4V2 (High-SpeedToolSteel) | 5. Co-based alloy | ||
| Processing Technics | 1. Heat treatment | Technical parameters | Nitriding layer depth:0.5-0.8mm |
| 2. Quenching | Nitrided hardness:900-1000HV | ||
| 3. Nitriding treatment | Bimetallic layer depth:3 mm | ||
| 4. Bimetallic alloy welding for screw | Bimetallic hardness:57~69HRC | ||
| 5. Bimetallic alloy centrifugal casting for barrel | Hard-chrome plating hardness after nitriding:≥950HV | ||
| 6. Hard-chrome electroplating | Chrome-plating layer depth:0.03-0.09mm | ||
| Linearity of screw:0.015mm | Surface roughness:Ra 0.4 | ||
| The most common types of conical twin screw barrel extruder | |||
| types of screw (d/D) | length of work(mm) | quantity ofextruder(kg/h) | speed of screw rotate(rpm) |
| Φ35/77 | 810 | 40-70 | 5~50 |
| Φ45/99 | 990 | 50-80 | 5~45 |
| Φ51/105 | 1070 | 100-150 | 4~45 |
| Φ51/105 | 1220 | 100-150 | 4~45 |
| Φ55/110 | 1220 | 120-180 | 4~40 |
| Φ60/125 | 1320 | 150-200 | 4~40 |
| Φ65/120 | 1440 | 200-250 | 4~40 |
| Φ65/132 | 1440 | 200-250 | 4~40 |
| Φ70/140 | 1460 | 220-300 | 4~40 |
| Φ75/150 | 1480 | 250-320 | 4~35 |
| Φ80/143 | 1660 | 300-360 | 4~35 |
| Φ80/156 | 1800 | 300-360 | 4~35 |
| Φ90/184 | 2000 | 400-500 | 3~35 |
| The most common types of parallel twin screw barrel extruder | ||||||
| D35/5 | D45/2 | D50/2 | D60/2 | D65/2 | D70/2Â Â | D72/2 |
| D75/2 | D80/2 | D85/2 | D90/2 | D93/2 | D100/2 | D105/2 |
| D110/2 | D115/2 | D120/2 | D125/2 | D130/2 | D140/2 | D150/2 |
| D160/2 | D170/2 | D180/2 | D190/2 | D200/2 | D200/2 | D250/2 |
Screw types:
Gradual change, chop, barrier, distributary, separate, air exhausting, pin, mixing and etc.
For good plasticizing effect, we have different design of screw barrel to meet customer's demand.
Specification :
Dia 20mm-250mm; L/D=15-45
Scope of Application:
1. Generally plastic material
2. Pipe/ Profile/ Sheet/Pelletizing
3. WPC, ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU,PE etc
Treatment:
Nitrized, Chrome coating, Quenching, Bimetallic
We are foucs on each process to make sure each screw barrel is qualified according to technical requirement.Â
Packaging Details:
1. Be brushed anti-corrosive oil on extruder machine single screw.Â
2. Packed with film.Â
3. Packed in the AA wooden.
Please provide samples or requirements about dimensions and tolerances of , semi-finished and finished products, the equipment, the monthlly comsumption quantity, the current screw and barrel you are using, HRC and so on.
For more information, please kindly contact as below:
Mobile: 0086-13917356326
| Technical Information for Conical Twin Screw Barrel | |||
| Main Base materials | 1.38CrMoAlA (SACM645) | Main Alloy Materials | 1. Ni-based alloy/Deloro alloy |
| 2. SKD-61 (Special Tool Steel) | 2. Tungsten carbide/Wolfram carbide | ||
| 3. 42CrMo (Ultrahigh StrengthSteel) | 3. NiCo-based alloy | ||
| 4. DC53 (Cold WorkDie Steel) | 4. Fe-based alloy | ||
| 5. W6Mo5Cr4V2 (High-SpeedToolSteel) | 5. Co-based alloy | ||
| Processing Technics | 1. Heat treatment | Technical parameters | Nitriding layer depth:0.5-0.8mm |
| 2. Quenching | Nitrided hardness:900-1000HV | ||
| 3. Nitriding treatment | Bimetallic layer depth:3 mm | ||
| 4. Bimetallic alloy welding for screw | Bimetallic hardness:57~69HRC | ||
| 5. Bimetallic alloy centrifugal casting for barrel | Hard-chrome plating hardness after nitriding:≥950HV | ||
| 6. Hard-chrome electroplating | Chrome-plating layer depth:0.03-0.09mm | ||
| Linearity of screw:0.015mm | Surface roughness:Ra 0.4 | ||
| The most common types of conical twin screw barrel extruder | |||
| types of screw (d/D) | length of work(mm) | quantity ofextruder(kg/h) | speed of screw rotate(rpm) |
| Φ35/77 | 810 | 40-70 | 5~50 |
| Φ45/99 | 990 | 50-80 | 5~45 |
| Φ51/105 | 1070 | 100-150 | 4~45 |
| Φ51/105 | 1220 | 100-150 | 4~45 |
| Φ55/110 | 1220 | 120-180 | 4~40 |
| Φ60/125 | 1320 | 150-200 | 4~40 |
| Φ65/120 | 1440 | 200-250 | 4~40 |
| Φ65/132 | 1440 | 200-250 | 4~40 |
| Φ70/140 | 1460 | 220-300 | 4~40 |
| Φ75/150 | 1480 | 250-320 | 4~35 |
| Φ80/143 | 1660 | 300-360 | 4~35 |
| Φ80/156 | 1800 | 300-360 | 4~35 |
| Φ90/184 | 2000 | 400-500 | 3~35 |
| The most common types of parallel twin screw barrel extruder | ||||||
| D35/5 | D45/2 | D50/2 | D60/2 | D65/2 | D70/2Â Â | D72/2 |
| D75/2 | D80/2 | D85/2 | D90/2 | D93/2 | D100/2 | D105/2 |
| D110/2 | D115/2 | D120/2 | D125/2 | D130/2 | D140/2 | D150/2 |
| D160/2 | D170/2 | D180/2 | D190/2 | D200/2 | D200/2 | D250/2 |
Screw types:
Gradual change, chop, barrier, distributary, separate, air exhausting, pin, mixing and etc.
For good plasticizing effect, we have different design of screw barrel to meet customer's demand.
Specification :
Dia 20mm-250mm; L/D=15-45
Scope of Application:
1. Generally plastic material
2. Pipe/ Profile/ Sheet/Pelletizing
3. WPC, ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU,PE etc
Treatment:
Nitrized, Chrome coating, Quenching, Bimetallic
We are foucs on each process to make sure each screw barrel is qualified according to technical requirement.Â
Packaging Details:
1. Be brushed anti-corrosive oil on extruder machine single screw.Â
2. Packed with film.Â
3. Packed in the AA wooden.
Please provide samples or requirements about dimensions and tolerances of , semi-finished and finished products, the equipment, the monthlly comsumption quantity, the current screw and barrel you are using, HRC and so on.
For more information, please kindly contact as below:
Mobile: 0086-13917356326
Relying on its own air distribution system, the compressed air enters the front and rear air chambers of the piston (hammer) alternately, so that the piston reciprocates continuously. The alloy ball teeth break the rock. According to the structural characteristics of the gas distribution system, the DTH hammer is divided into two types: valve type and valveless type. (1) DTH hammer with valve. The air flow is controlled by the valve plate, and can be divided into side exhaust and central exhaust according to the exhaust mode. The side-exhaust valve DTH hammer is the earliest used, and its exhaust gas is discharged from the side of the hammer head. The exhaust gas of the central exhaust valve DTH hammer is discharged from the central hole of the hammer head. In comparison, the effect of removing cuttings by the central exhaust method is good, the service life of the hammer head is long, and the drilling efficiency is high. (2) Valveless DTH hammer. There is no valve plate, and its gas distribution system consists of a group of holes arranged on the cylinder wall, which automatically distributes gas during the movement of the piston. In the total stroke of the piston movement, one section relies on the expansion of compressed air to do work. Under the same pressure conditions, the consumption of compressed air is only 2/3 of that of the valved DTH hammer. According to the working pressure, the DTH hammer is divided into low pressure DTH hammer (0.5~0.7MPa), medium pressure DTH hammer (0.56~1.05MPa) and high pressure DTH hammer (0.56~2.46MPa), which are suitable for different working conditions.
Down The Hole Bits,Dth Hammer,Down Hole Hammer Bits,Down Hole Hammer Drill Bits
Gansu Lanzhou and Wuwei International Land Port Management and Operation Co.Ltd. , https://www.gslwyygs.com