Recently, Sumitomo Osaka Cement and Japan's Lee Chang Industrial jointly developed the liquid epoxy resin "Rico Zi-ma inus", which greatly improves the thermal conductivity while ensuring electrical insulation. The thermal conductivity is at most 7.3 W/m·K, which is about 40 times higher than that of the general-purpose epoxy resin. According to reports, the heat dissipation characteristics are close to metal oxides, and can be used for heat dissipating components such as LED lighting fixtures, motors, and power supply devices.
The product is used in a "1 liquid type" in which the main material and the hardening material are mixed in a ratio of 1 to 1 to cause thermal hardening, and a "1 liquid type" in which the main material and the thermosetting material have been mixed. As a standard, the two-liquid type has four types of thermal conductivity of 1, 2, 4, and 7 W/m·K, and the one-liquid type has three types of thermal conductivity of 1, 2, and 4 W/m·K. The products developed this time have a specific resistance of up to 1013 Ω·cm or more, ensuring electrical insulation. The viscosity at 75 ° C or higher is less than 15 Pa·s. Since it is required to be thermally hardened by heat treatment at a temperature of 120 to 130 ° C for several hours, it has sufficient fluidity during molding.
In order to achieve the above three characteristics at the same time, the company has mixed a metal oxide filler having high electrical insulation and high thermal conductivity in the epoxy resin. This filler adds other metal oxides as a crosslinking agent to alumina particles having a thermal conductivity of up to 20 W/m·K and bonds them together.
The metal oxide filler is added in an amount of 75% to 90% of the total weight. Recently, Sumitomo Osaka Cement and Japan Lichang Industrial jointly developed a liquid epoxy resin "Rico Zi-ma inus", which ensures electrical insulation. At the same time, the thermal conductivity is greatly improved. The thermal conductivity is at most 7.3 W/m·K, which is about 40 times higher than that of the general-purpose epoxy resin. According to reports, the heat dissipation characteristics are close to metal oxides, and can be used for heat dissipating components such as LED lighting fixtures, motors, and power supply devices.
The product is used in a "1 liquid type" in which the main material and the hardening material are mixed in a ratio of 1 to 1 to cause thermal hardening, and a "1 liquid type" in which the main material and the thermosetting material have been mixed. As a standard, the two-liquid type has four types of thermal conductivity of 1, 2, 4, and 7 W/m·K, and the one-liquid type has three types of thermal conductivity of 1, 2, and 4 W/m·K. The products developed this time have a specific resistance of up to 1013 Ω·cm or more, ensuring electrical insulation. The viscosity at 75 ° C or higher is less than 15 Pa·s. Since it is required to be thermally hardened by heat treatment at a temperature of 120 to 130 ° C for several hours, it has sufficient fluidity during molding.
In order to achieve the above three characteristics at the same time, the company has mixed a metal oxide filler having high electrical insulation and high thermal conductivity in the epoxy resin. This filler adds other metal oxides as a crosslinking agent to alumina particles having a thermal conductivity of up to 20 W/m·K and bonds them together.
The metal oxide filler is added in an amount of 75% to 90% by weight, which accounts for more than half of the weight of the product developed this time. Ordinary epoxy resins have higher viscosity and moldability gradually deteriorates. As a result, the company has developed epoxy resins and mixing processes that do not increase viscosity when mixing metal oxide fillers. However, the technical details cannot be disclosed now. It accounts for more than half of the weight of the products developed this time. Ordinary epoxy resins have higher viscosity and moldability gradually deteriorates. As a result, the company has developed epoxy resins and mixing processes that do not increase viscosity when mixing metal oxide fillers. However, the technical details cannot be disclosed now.
crawler tractors are versatile,domestic initiative and technology leading. Hydraulic controlled differential - brake turn to technology , 360 degree steering wheel control and spin turn are our company`s unique advantages. In addition, our products also have the superiorities of triangular track drive, low grounding pressure and better Paddy field performance. Our company has iron Crawler Tractor and Rubber Crawler Tractor, which two main products. Every products have different types. These products are of high efficiency, long operating life. and low fuel consumption. Our crawler tractors are easy switching between hydraulic infinitely variable speed and mechanical transmission.
Model
NF-Y602
NF-Y702
NF-Y802
Size
length×width×height(mm)
2900×1360×1500
3430×1590×2300
Weight
(Kg)
1700
2200
Minimum Ground Clearance
(mm)
260
410
Engine
Model
3G25TC
YD4CZ70C1
YD4SZ80C1
Form
Electronic
injection.vertical.water-cooled.four-stroke
Rated power(kW)
44.1
51.5
58.8
Fuel
Diesel
Rated power(r/min)
2400
Starting method
Electric start
Steering Brake System
Steerig system type
Planetary differential steering
Brake system type
Wet friction steering
Drive Train
Clutch type
Single-chip single-acting
Transmission type
2(mechanical file)+2×2(hydraulic stepless speed change)
Transmission shift model
Gear shift
Walking System
Rack form
Rigid frame type
Track pitch section×number×width
90×46×280
90×50×350
The theoretical speed of each file(km/h)
Forward:mechanical block:4.86; 8.65
Hydraulic block:0-5.75; 0-10.24
Back:0-5.75;0-10.24
Working Device
Lifter type
Semi-split
Tillage depth control
Force adjustment
PTO form
Type1,non-independent
Power output shaft speed(r/min)
624/960
Model
NF-702
NF-802
NF-902
Size
length×width×height(mm)
3690×1500×2400
3690×1650×2560
Weight
(Kg)
2255
2450
Minimum Ground Clearance
(mm)
395
420
Engine
Model
YD4CZ70C1
YD4EZ80C1
YD4EZ90C1
Form
Electronic injection.vertical.water-cooled.four-stroke
Rated power(kW)
51.5
58.8
66.2
Fuel
Diesel
Rated power(r/min)
2400
Tarting method
Electric start
Steering Brake System
Steerig system type
Planetary differential steering
Brake system type
Wet friction steering
Drive System
Clutch type
Single-chip single-acting
Transmission type
Eight forward speed+ reverse gear
Transmission shift model
Gear shift
Walking System
Rack form
Rigid frame type
Track pitch section×number×width
90×51×400
90×56×400
The theoretical speed of each file(km/h)
Ahead:1.22;1.80;2.92; 3.84;5.50;8.08;13.13;17.25
Backward:0.97;1.43;2.32;3.04;4.36;6.41;10.42;13.68
Working Device
Lifter type
Semi-split
Tillage depth control
Force adjustment
PTO form
Type1,non-independent
Power output shaft speed(r/min)
720/1000
PTO shaft spline and the outer diameter mm
8×38
Model
NF-Q502
NF-Q602
NF-Q702
NF-Q802
Size
length×width×height(mm)
3430×1590×2300
Weight
(Kg)
1715
1890
1930
1990
Minimum Ground Clearance
(mm)
395
Engine
Model
YD4C50V1
YD4JZ60C1
YD4CZ70C1
YD4SZ80C1
Form
electronic injection.vertical.water-cooled.four-stroke
Rated power(kW)
36.8
44.1
51.5
58.8
Fuel
diesel
Rated speed(r/min)
2400
Starting method
Electric start
Steering Brake System
Steerig system type
Tooth embedded clutch-braking
brake system type
Wet friction type
Drive System
clutch type
Monolithic single-acting
transmission type
Main transmission (hydraulic stepless speed + mechanical gear)
+auxiliary transmission 2 files
transmission shift model
Gear shift
Walking System
rack form
Rigid frame type
track pitch section×number×width
90×46×350(with side teeth)
90×50×350(with side teeth)
the theoretical speed of each file(km/h)
Hydraulic:high0-9.2;low0-6.2
mechanical:8.2;5.3
Working Device
lifter type
Semi-split type
tillage depth control
Bit adjust(optional force adjust)
PTO form
Type1, non-independent
power output shaft speed(r/min)
620/960
PTO shaft spline and the outer diameter mm
8×38
If you have any questions, please contact with us directly. Crawler tractors are produced
by our company with high quality and good appearance. Welcome you can visit our factory.for
inqury,Please send mail directly to us!
Crawler Tractor
Crawler Tractor,Light Crawler Tractor,Tractor With Low Ground Pressure,Multifunctional Crawler Tractor
Hunan NongFu Machinery&Electronic.Co., Ltd. , http://www.nfagmachine.com