Recently, the Qingdao Municipal People's Government issued the "Decision on the 2008 Qingdao City Science and Technology Awards." Among them, the heavy-duty dump truck multi-stage hydraulic cylinder project of China National Heavy Duty Truck Group's special-purpose automobile company was awarded the second prize of Qingdao City Science and Technology Progress Award in 2008. The Qingzhan-EURIK (Europe) multi-stage cylinder project is a product of China National Heavy Duty Truck Group's special-purpose vehicle company that introduced European advanced technology design and production. Since its introduction into the market, it has been favored by users. It is reported that it has the following characteristics: 1, long-oriented: a unique long guide sleeve design, the longest in the same domestic cylinder; 2, high and low pressure sealing and taking into account: a unique high-pressure polyurethane Y-ring seal low pressure O-ring combination seal Structure, put an end to the possible leakage in the harsh environment of use; 3, soft and hard support: special soft guide and overall hard support structure, limit the ring using brass and cylinder tube after welding processing; 4, high-strength materials: The cylinder tube is made of high-strength seamless steel pipe, which has high precision and small movement clearance, improves the anti-flexing ability of the hydraulic cylinder, allows the maximum swing angle of 32° with a thin-walled design, light weight, small change of impact, smoother movement; Chromium plating treatment: The chrome-plated surface treatment is applied to all sports sections to prevent rust and wear, which increases the service life.
Cutting
Oil:
Cutting fluid by a variety of super
functional additives through scientific composite fit, and has good cooling
performance, lubricating performance, rust resistance, oil removal the function
of cleaning, corrosion, easy dilution characteristics. To overcome the
traditional soap emulsion summer winter easy smelly, difficult dilution, anti
rust effect difference problem, and has no adverse effects on the lathe for
black metal paint, cutting and grinding, grinding is the current most. Leading
indicators are better than the saponification of cutting fluid it has good oil,
cooling, cleaning, rust and other characteristics, and has non-toxic,
tasteless, no corrosion on the human body, the equipment corrosion, the
characteristics of environment pollution.
Category:
The cutting fluid can be divided into straight
oil,water-based emulsion, or soluble oil,semisynthetic cutting fluid and
synthetic cutting fluid. The emulsion, semi synthetic and synthetic
classification usually depends on the basis of oil products in the category:
the emulsion is only with mineral oil as base oil soluble cutting fluid; semisynthetic
cutting fluid containing both mineral oil and base oil containing chemical
synthesis of water-soluble cutting fluid; synthetic cutting fluid is only the
use of chemical synthetic base oil (which does not contain mineral oil) water
soluble cutting fluid. The cutting fluid of each type will contain a variety of
additives in base oil outside: anti rust agent, nonferrous metal passivation of
corrosion agent, defoaming agent and so on. Some manufacturers will have a
classification of micro emulsion; usually considered between emulsion and semi
synthetic cutting fluid categories. Diluted emulsion is milky white in
appearance; dilution semi synthetic fluid is usually translucent Some products
are milky white; the dilution of the synthetic solution is usually completely
transparent, such as water or a certain color.
Function:
Lubrication of metal cutting fluid (the
cutting fluid lubrication) in the cutting process, can reduce the rake face and
chip, flank and inter surface friction, forming part of lubricating film,
thereby reducing the cutting force, friction and power consumption, reduce the
temperature of the wear surface and the cutting tool and the workpiece blank
the friction parts, improve the cutting performance of the workpiece material.
During the grinding process, adding grinding fluid, grinding workpiece and the
lubricating film formed between the abrasive and grinding fluid into the
grinding wheel, the friction interface decreases, prevent the abrasive cutting
edge wear and adhesion of the chip, thereby reducing the grinding force and
friction heat, improve the durability of the grinding wheel and the workpiece
surface quality.
The cooling effect of cooling liquid is
cutting through it and by cutting a heating tool (or wheel), chip and workpiece
between convection and evaporation, the cutting heat from tooling A place away,
thus effectively reducing the cutting temperature, reduce the deformation of
the workpiece and the cutting tool heat, keep tool hardness, improve the
machining accuracy and tool durability. The cooling performance of cutting
fluid and its thermal conductivity, specific heat, heat of vaporization and
viscosity (or liquidity). The thermal conductivity and heat capacity of water
is higher than that of oil therefore, the cooling performance of water is
better than cleaning oil. During the metal cutting process, cutting fluid has
good effect of cleaning requirements. To remove debris and produce chips, iron,
oil and sand, prevent the machine tool and the workpiece, the tool of
contamination, so that the cutting edges of the tool or grinding mouth to keep
sharp, does not affect the cutting the effect for oil based Cutting Oil, lower
viscosity, cleaning ability is stronger, especially with kerosene, diesel oil
cutting and other light components, permeability and cleaning performance
better. Water-based cutting fluid containing surfactant, the cleaning effect is
better, because It can form film on the surface, to prevent the sludgeparticles
and adhesion in the workpiece, cutting tool and grinding wheel, at the same
time it can seep into the sludgeparticles and adhesion of the interface, it
separated from the interface with the cutting fluid, cleaning rust away, keep
the interface.
In the process of metal cutting work and
environmental media and cutting fluid component decomposition or oxidation and
sludge produced with the corrosive medium and corrosion, the surface of machine
parts in contact with the cutting fluid will be corrosion. In addition, between
the workpiece or the process of the transfer process also requires temporary
storage, cutting fluid has certain anti rust capability, to prevent
environmental media the residual sludge in cutting fluid and other corrosive
substances to cause erosion of metals. Especially in the south of our country,
humid and rainy season, more attention should be paid to rust.
Cutting Oil Cutting Oil,Soluble Oils,Semisynthetic Fluids,Synthetic Fluids VESTA Motoring Ltd , http://www.vesta-industry.com