Hydraulic valve works

Hydraulic valve works
1) Industrial (also known as fixed equipment, which is relative to the walking mechanical terms) is generally 4-pass valve, that four main ports: pressure oil imports P, load ports A and B, leading to the tank back to the oil port T. The rest of the control port, load pressure LS port, drain port and so can not be calculated in a few pass inside.
2) Those who need the pilot to control the oil on the main stage of the elements, such as reusable hydraulic hose fittings, the pilot oil sources are present and how to deal with the issue back to the oil. This is the performance of hydraulic quick couplers technology flexibility, giving users stay out of the room according to the actual needs of the system for selection. Here:
X-- control oil inlet from the outside of the main system (called external control, if from P mouth, said internal)
Y-- control oil taken directly to tank port (called outside back (leaks), if returned to T port, said inner back (inside vent))
L-- valve leak within the oil tank alone brought back the oil port
3) Incidentally, processing pilot oil can be reasonably combined as required:
External control, outside back; external control, internal back; internal and external back; internal control, internal back.
4) Incidentally, for L mouth leaking oil, outside the pilot oil return, must lead directly back to the tank (or through the filter), should never be brought together to the main return oil tank T ports be brought back. This situation is even more sensitive in the ratio, the servo system.

The use of performance and service life

With the development of technology. The use of performance and service life of the valve valve put forward higher requirements. Currently, under the conditions when provided with a 120 mesh filter and a magnetic filter device, by using the test valve is opening and closing times of the total flow of the emulsion and the valve, to measure the life of the metric hydraulic hose fittings. But in fact the actual downhole indoor type test results of the work vary greatly. Many countries are now in the form of experiments, an increase of anti-pollution requirements, or the incorporation of appropriate pulverized in emulsion, some added mechanical impurities. To do this, you need to use the new, anti-pollution and strong, suitable for underground working conditions manifold seal pair.
Hydraulic support various hydraulic valve life is very low, foreign ways and means to solve is to improve the precision filtration system and improving the quality of the emulsion, but with little success. This paper analyzes the development process Sealing valve stent, discusses the relationship Sealing materials and sealing performance. Pointed out sealing technology is the key to the hydraulic valve hydraulic support life improved.

Electromagnetic friction brake IC invention meaning:

Cuttingmachine brake IC invention meaning:
   Creating a silicon era
At the time, he probably did not really realize the value of this invention. After the Nobel Prize, he said: "I know I invented the integrated circuit is very important for the electronics industry, but I never thought it would be like today widely applied."
IC replaced the transistor, for the development of the various functions of electronic products paved the way, and a significant reduction in the cost, since the third generation of electronic devices on stage. Its birth, the emergence of the microprocessor as possible, but also to ordinary computer into everyday tools can get close. Application integration technology, spawned more convenient electronic products, such as the common hand-held electronic calculator, Kilby is a new invention of integrated circuits, following after. Until today, the silicon material is still the main material of our electronic devices. So, in 2000, 42 years after the advent of integrated circuits, people finally realized that he and his value invention, he was awarded the Nobel Prize in Physics. Nobel Committee has commented Kilby: "laid the foundation for modern information technology."

Plastic pipe circulating pressure impact test machine

plastic pipe circulating pressure impact test machine (water hammer test machine)
 Plastic pipe circulating pressure impact testing machine, also known as water hammer test machine for testing pipe, fittings or piping system in the case of alternating load fatigue and stress tolerance pulse peak stress. For a variety of hot and cold water piping system with rigid plastic pipes and flexible pipe systems, such as: PP-R, PP-H, PE, PEX and aluminum-plastic composite pipe and other pipes, pipe fittings.
This instrument uses a microcomputer hydraulic hose and fittings control, LED digital display, a simple, clear display, automatic alarm and other functions, various research institutes, national quality inspection institutions, large pipe manufacturers the necessary testing equipment.
Standard:
Standard GB/T18991, GB/T18992, GB/T18997, ISO10508, ISO15875, ASTM F1281, ASTM F1282, ASTM F1335, etc.
A) pressure cycles per minute, 30 ± 5 times (low voltage 0.1 ± 0.05Mpa, pressure 1.5 ± 0.05Mpa)
2) Timing accuracy: 1s
3) counting error: ± 1 ‰
4) Pressure accuracy: 0.05Mpa
5) the number of cycles set arbitrarily set :0-10000
6) Temperature range: 23 ± 2 ℃
7) Power supply: 380VAC/220VAC mix 50HZ 3kW

To warm the pipe full pipe pressure testing mach

To warm the pipe full pipe pressure equipment is used to test the coil resistance to internal pressure test, sufficient to avoid detection of resistance to internal pressure pipe brought incompleteness is an economical and practical, versatile, high degree of automation of the testing machine.
To warm the pipe full pipe pressure american hydraulic adapter controlled by a pressure micro part, auto-fill pressure relief and electric components, pressure micro control part adopts the microcomputer MCU control, equipped with a high-resolution, high-speed Σ-△ 16-bit analog-to-digital conversion chips, communications and computers always, you can also be individually controlled by the pressure unit, and according to stressful situations automatically fill pressure and automatic pressure relief. The machine can be achieved in a single step flushing, pressure and emptying tests. With leakage warning, burst identification, real-time monitoring, power holding pressure and other functions. All use the machine CE certification of electronic components, solenoid valves, Germany, Denmark sensor; reliable long-term operation and high stability, grape purple border, decent, dignified and beautiful.

analyze future CNC laser cutting machine industry focus direction

analyze future CNC laser cutting machine industry focus direction
At present, the international representative of the laser cutting manufacturer mainly German Trumpf, Bystronic, Italy Prima, etc., domestic Shenzhen Han, Wuhan Chutian

, Shanghai Unity Prima, etc., the market demand for laser cutting increasing year by year.

CNC laser cutting machine industry's future development, from the application of industry and enterprise point of view, focusing on the development of CNC laser cutting machine range will focus on the following aspects:

1, high-speed, precision CNC lathes, turning centers class and four-axis machine tool linked above. Mainly to meet the aerospace, aviation, instruments, meters, electronic letter

Information and teflon hose biological engineering industry needs.

2, high-speed, high-precision CNC milling and boring machine and high-speed, high-precision horizontal machining center. Mainly to meet the automotive engine cylinder head and aerospace, high-tech

Other industries large and complex structural support, housing, cabinet, light metals parts and precision parts machining requirements.

3, heavy, super heavy-duty CNC machine tools: CNC Boring and Milling Machine, Heavy Duty CNC gantry milling machine and machining center, CNC horizontal lathes and vertical heavy-duty vehicles

Bed, CNC hobbing and other heavy-duty, these products meet energy, aerospace, military, ship master manufacturing, heavy machinery manufacturing, large mold machining, turbine cylinder

Body parts processing industry needs.

4, CNC grinding machines: CNC ultra-precision grinding machines, high-speed precision grinding crankshaft and camshaft grinding machines, all kinds of high-precision high-speed dedicated grinder, etc., to meet the precision ultra-precision

Processing needs.

5, CNC metal forming machine tools (forging equipment): High-speed precision CNC sheet metal stamping equipment, laser cutting complex machine, CNC power spinning machines, mainly full

Foot automobile, motorcycle, electronic information industry, household appliances and other industries demand for efficient production batch sheet metal and automotive wheels and a variety of military industry walled, high-strength, high-precision back

Transition parts processing requirements. 6 CNC EDM categories: large-scale precision CNC EDM, CNC EDM wire cutting machine to go slow, precise holes electricity plus

Working machine tools, mainly to meet the large-scale and precision tooling, precision machining parts, cone-shaped holes or hole british hydraulic adapter and aerospace, aviation and other industries special needs.

7, CNC machine tools and production lines: flexible manufacturing automatic production line FMS / FMC) and a variety of special machine tools, such production lines for the automotive, appliance and other lines

Processing industry block, cylinder heads, gearbox housing, etc., and many varieties of variable volume housing box parts processing requirements.