CNC plasma cutting machine analysis of various aspects

CNC plasma cutting machine analysis of various aspects of
CNC plasma cutting cutting machine process has cut fast, slotted small features, but many users tend to enterprises in the actual operation of a variety of problems occur

, Resulting in actual cutting speed is limited, slotted too large, cut surface is not the whole phenomenon, excluding CNC plasma cutting machine itself mechanical failures and other factors, the user enterprises in the operation

Is not set correctly for CNC plasma cutting machine related parameters will also affect the actual cutting results, the following will be the Blue Technology Co., Ltd. Wuhan actual shadow Experience

Rang CNC plasma cutting hydraulic pipe crimping machine effect of various factors, and users exchange about business:

A no-load voltage and the arc column voltage

Plasma cutting power, must have a sufficiently high no-load voltage, in order to easy the plasma arc ignition and stable combustion. No-load voltage is typically 120-600V, while

Arc column voltage is typically no-load voltage of the half. Arc column voltage increase, can significantly increase the power of the plasma arc, which can improve the cutting speed and cutting of greater thickness

Sheet metal. Arc column voltage tends to increase by adjusting the gas flow and shrinkage does not reach the inner electrode, but the arc column voltage can not exceed 65% of the no-load voltage, otherwise it would be, etc.

Plasma arc instability.

(2) Cutting current

The same can be improved to increase cutting current plasma arc power, but it is limited by the maximum allowable current, otherwise it would be thicker plasma arc column, kerf width increases

, Electrode life decline.

3 gas flow

Increased gas flow both to improve the arc column voltage, but also enhance the arc column compression leaving the role of the plasma arc energy is more concentrated, jet stronger, thus improving

Cutting speed and quality. However, excessive gas flow, but will make the arc column shorter heat loss increases, so that the cutting diminished capacity until the cutting process can not be normal

.

4 pipette shrinkage

Within the so-called shrinkage refers to the tip end of the electrode distance, a suitable distance so that the arc within the torch tip to get good compression, access to energy concentration, high temperature

The effective plasma arc cutting. Distance is too large or too small, will make the electrode severe burning, cutting tip burn and cutting ability. Within shrinkage generally take 8-11mm.

5 cutting nozzle height

Cutting nozzle tip height is the end to be cut from the workpiece surface. The distance is generally 4 ~ 10mm. It is the same with the electrode within the shrinkage, the distance to the right in order to give full

Waving plasma arc cutting efficiency, otherwise it would cutting efficiency and cutting quality or the torch burn.

6. Cutting speed

All of the above factors directly affect the compression effect of the plasma arc, that is, the temperature affect the plasma arc and the energy density, and high-temperature plasma arc, high energy resolution

Set the cutting speed, so the above factors were associated with the cutting speed. Ensure the cutting quality of the premise, should be possible to improve the cutting speed. This is not only mention

High productivity, and can reduce the amount of deformation of parts cut kerf area and heat affected zones. If the cutting speed is inappropriate, the opposite effect, but will also increase the sticky residue,

Manifold and valve member with the combination of research

According to incomplete statistics, in 2011 China's fluid sealing industry above designated size industrial output value of 77.271 billion yuan enterprises, an increase of 21%, of which the hydraulic industry completed 43.62 billion yuan, an increase of 18.47%; pneumatic industry completed 15.046 billion yuan, an increase of 29.60%; sealing industry completed 18.605 billion yuan, an increase of 23.95%. fluid airtight industry 125 key enterprises in 64 hydraulic industry, hydraulic industry 6, pneumatic industry 40, 15 sealing industry, economic efficiency index was 233.56, 226.44 over the same period last year. these key enterprises of the industrial output value of 33.424 billion yuan, an increase of 12.94 percent, of which the output value of 14.171 billion yuan hydraulic enterprises, an increase of 7.72%; hydraulic enterprise value of 533 million yuan, down 4.77%; pneumatic enterprise value of 8.639 billion yuan, an increase of 25.12%; sealing enterprise value of 7.32 billion yuan, an increase of 11.14% of the good prospects for development, but also attracted a lot of foreign investment in the industry. According to incomplete statistics, nearly two years fluid sealing industry to invest no less than 30 billion yuan, including construction hydraulic hose crimping machine and other hydraulic hosting industry investment funds accounted for approximately 50% of total investment. Sany, Liugong, Long Engineering , Zoomlion, Shandong Changlin construction machinery and a number of well-known enterprises have invested or hydraulic corporate mergers and reorganizations. China is currently seeking high-end break more than 20 tons of hydraulic excavators used for basic control in the hands of an enterprise that Kawasaki company. Each discussed the matter, sand Bossen are solemnly. Domestic high-end hydraulic manifold block the kinds of situation, has attracted national attention. October 2011, after six months of planning, engineering hydraulic hose cutting machine with high-pressure hydraulic manifold system industrialization and application of the preparatory body established collaborative work platform. Under the guidance of government departments in the industry, driven by the working platform focused on the China Construction Machinery Industry Association and the China Hydraulics Pneumatics & Seals Association, two associations of superior forces to HMB as a breakthrough, taking manifold and accessories production Gakken a combined form, increased industry consolidation, the establishment of effective docking platform, and strive in the next 3 to 5 years to break China's construction machinery industry hydraulic and other accessories on foreign dependence.

Sleeve pipe connector characteristics and sealing principle

Currently at home and abroad have adopted a structure more advanced pipe connections, ie ferrule tube fitting connection method. National Bureau of Standards in 1983 enacted a national universal connectivity standard card sets. Card sets are many types of connections, such as extrusion, plumper, self-supporting, bite fit and so on. According to the National Bureau of Standards issued by standards, our sleeve type connection is extruded and bite fit, its structure consists of the connector body, ferrule and nut three parts. The key part is the card sleeve - a cutting edge with a metal ring (domestic hot water heating with the card sets for the rubber sleeve).
First, the sleeve pipe connector Features
Card sets of pipe joints for feature relies ferrule cutting edge, firmly grip the pipe wall, so that the high pressure fluid inside the tube is fully sealed.
This connector also has a locking structure characteristics, impact resistance, vibration resistance. Bite-fit tube fittings suitable for small diameter high-pressure system. Squeeze tube fittings suitable for medium and low-pressure pipe, such as indoor hot water heating, water supply, hot water, gas pipeline. Currently used aluminum tube is extruded pipe connection tube fitting connections. quick coupling fittings As indoor heating pipes, hot water, water supply, gas pipeline to connect using the above process, reducing the threaded connection, greatly improved the foreman labor intensity, effectively reducing the project cost (due to indoor heating pipe thread connection required union or filament connections, while the use of the card sets of pipe joints can be reduced union or pipe clamps, filament, roots mother, but also reduces the leakage point). Since no special tools and flare welding, flammable, explosive areas and high altitude places pipeline particularly well suited.
Second, sleeve type pipe joint sealing principle (1) bite-fit connector ferrule sealing principle. When the tube is in the form in Figure 4-13 After assembly, the nut hand turn into the buckle, turn the pipe when the pipe and the nut will not turn by hand, indicating the connector body, card sets, pipes and nuts devices are in preparatory work status, and then use a wrench on the lap, the entire assembly is completed. In the joint assembly process, the card sets the external force, pushed into the connector body 24 ° cone hole ferrule end edge taper bound by a radial contraction, so that the outer wall of the pipe sleeve edge cut (cutting depth t = 0.25 ~ 0.5mm), thereby forming an annular groove as shown in Figure 4-13 a, in order to ensure between the tube and the sealing sleeve and connections. Meanwhile ferrule edge side 26 ° outer cone with connector body between completely close quick coupling, as shown in Figure 4-13 form a reliable outer seal band b, guarantee card sleeve and the seal between the connector body. In addition, the nut tightening the compression force generated under the arched central sleeve, spring-like form of a drum, to prevent loosening of the nut due to vibration phenomena. Card sets tight hold of the tail and steel pipe, steel pipe can serve to prevent vibration transmission to the blade end of the ferrule effect. The sealing principle shown in Figure 4-14. This connection structure has a good resistance to shock and vibration performance. Meanwhile, in order to achieve the above functions, card sets should have sufficient hardness and good toughness.

High pressure steel wire braided hose

High pressure steel wire braided hose
Product structure type:
Steel wire braided hose structure is composed of a liquid-resistant synthetic rubber inner layer, middle layer, Ⅰ or Ⅱ or Ⅲ layer steel wire braid reinforcement, and excellent weathering performance synthetic rubber cover.
Product use:
Wire reinforced hydraulic rubber hose is mainly used for mine hydraulic support, oil exploitation, suitable for construction, material handling, forging metallurgy, mining equipment, ships, injection molding hydraulic cutting machine, agricultural hydraulic cutting machine, tools and various industrial sectors mechanization and automation of hydraulic petroleum-based delivery system with a certain pressure and temperature (e.g., mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) liquid, water-based liquid (e.g., emulsions, oil-water emulsion, water), gas and liquid transmission with.
Features:
1. Hose special selection made with synthetic rubber, has excellent oil resistance, heat aging resistance.
2. Hose bearing pressure, pulse superior performance.
3. tube combined with tight, use a soft, small deformation under pressure.
The hose has excellent resistance around the song and fatigue resistance.
5. The length of the large steel wire braided hose, φ32 length of 20 meters or more, φ25 can connect more than ten meters below even meters.
Temperature: Oil -40 ℃ - + 100 ℃, air -30 ℃ - + 50 ℃, water emulsion + below 80 ℃, please use the factory beyond specific products.

Hydraulic fittings standard

Hydraulic fittings standard
Assembly sleeve pipe hydraulic fitting
① preinstalled card sets of pipe joints most important aspects preloaded directly affect the reliability of the seal. Generally require a dedicated pre-heater. Small diameter joints can be pre-installed on the vise. In practice, as a parent with a connector, the nut, ferrule can be pressed onto the tube. There are straight pipe joints card sets, card sets Straight turning heads, sleeve tee pipe fittings and other types. I found that even in the same factory shipment, these types of connector body tapered hole depth is often not identical result is a leak, and this problem is often overlooked. The correct approach is to end what kind of pipe joint body, connecting the ends of the corresponding pre-installed with the same type of connector, which can maximize avoid leakage.
② pipe end should be flush. After sawing the pipe should be ground flush with the wheel and other tools, and deburring, cleaning with high pressure air blowing before use.
③ When preloaded, you should try to keep the coaxial tube and connector body, if the tube is too large will cause deflection seal failure. ④ preloaded force should not be too much of the inner edge of the ferrule just embedding the tube wall, card sets should not have significant deformation. During pipeline connection, then the provisions of the tightening force assembly. ф6-1 card sets tightening force of 64-1 15n, 16фmmr 259n, ф18mm to 450n. If at the time of pre-deformation serious bite, will lose seal.