Experimental study on semi-finishing forging of double gear
The Battlefield Vehicle Cabin Air Conditioner is originally developed for the
fire fighting battlefield sleeping cabins, which provides a comfortable rest or
sleep condition for the firemen. It, in fact, can be used for all similar fields
like trucks, temporary passageway, or small tents for emergency or
military use.
Compared with normal window type air conditioner, it doesn't need
to reserve a big hole and should take some inside space.
This kind of Sleeping Cabin Air Conditioner supplies the air by
duct pipes. No need extra installation. The units are easy to be moved by
four wheels. Compact design makes the units can be transported along with the
vehicles.
Sleeping Cabin Air
Conditioner Technical Data (2.5kW/3.5kW):
Model No.
TSAC-025HCWa
TSAC-035HCWa
Function
Cooling&Heating
Cooling&Heating
Cooling capacity
kW/BTU
2.5KW/9000BTU
3.5KW/12000BTU
Heating capacity
kW/BTU
2.70KW/25000BTU
3.85KW/25000BTU
Electric source
PH-V-Hz
220V 50Hz / 60Hz
220V 50Hz / 60Hz
Rated Cooling Power input
W
895W
1250W
Rated Heating Power input
W
954W
1360W
Rated Cooling Current input
A
4.5A
5.8A
Rated Heating Current input
A
4.9A
6.3A
Evaporator Fan Type
Direct Drive Centrifugal Fan
Direct Drive Centrifugal Fan
Evaporator Side Air flow volume
m3/h
500m3/h
600m3/h
Static pressure
Pa
100
100
Compressor
Type
Rotary
Rotary
Brand
GMCC
GMCC
Refrigerant
R22/R410a
R22/R410a
Condenser Fan Type
Direct Drive Axial Fan
Direct Drive Axial Fan
Condener Side Air Flow Volume
m3/h
1200m3/h
1500m3/h
Noise
dB(A)
≤52
≤55
Gross /Net Weight
kg
88kg/80kg
93kg/85kg
Net Dimension (L x W x H)
mm
760*610*620
760*610*620
Packing Dimension (L x W x H)
mm
800*650*810
800*650*810
Battlefield Vehicle Cabin Air Conditioner Sleeping Cabin Air Conditioner, Fire fighting camp cabin air conditioner, fire truck cabin air conditioner, Fire fighting vehicle air conditioner Taizhou Tentcool Electrical Appliance Co., Ltd. , https://www.tentcool.com
Experimental study on semi-precision forging of double gears Xu Shuqin, Chi Chengzhong (School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China). The two-color plastic mud was simulated on a 1000kN material strength testing machine, and the 20CrH steel was tested on a 10000kN friction press. The test results show that the semi-finishing process of the double gear is feasible, the mold design is reasonable, and the mold filling is good.
Fund Project: Research funding project for returned overseas students in Shanxi Province For a long time, gear teeth have been machined and formed, which wastes raw materials and requires a lot of machining time. In order to solve this problem, experts and scholars in the plastic forming industry have carried out a large number of studies on the selection of friction presses for more than 20 years, which can meet the requirements of machining allowance for subsequent machining. f responsibility editor Lu Xuemei) a series / w Lu Xuemei <. The model geometry used in the net simulation test is identical to the prototype. The simulation test was carried out on a 1000 kN material testing machine with a blank of Y 163 mm. According to the test record curve: stress; is the similarity constant of force; is the length similarity coefficient, taken here = 1. The deformation force can be given by the following formula: the values ​​of the corresponding parameters are brought into the above formula to obtain empirical formula estimation and simulation test. The predicted form load relative error is as high as 30%, which is mainly due to the fact that all parameters are taken at a safe value when using the empirical formula.
5 Production test Double gear production test process: band saw cutting, medium frequency induction heating, pre-forging, final forging.
Blanking specification: Y85mmX163mm pre-forging: 6300kN friction press, pre-heating of forging die, water-based graphite lubrication 000kN friction press, pre-heating of forging die, water-based graphite lubrication.
See the real photo of the precision forging. After testing, the forgings are well filled. 6 Conclusion The semi-precision forgings have reasonable tooth profile design, simple contour, convenient calculation and easy processing. The pre-forging die design of double gears is reasonable, which ensures the final forming of forgings; the lower end teeth of semi-finishing forgings The rough insertion volume is only 1/3 of the original forgings, which solves the "bottleneck" problem on the production line. The double-finishing semi-finishing process reduces the quality of the blank from 9.3kg to 8.1kg, which has good economic benefits.
