China Truck Network hosted the 4th Discovery Trust
For many years, Haiwo Machinery has been committed to the R&D, production and sales of commercial vehicle parts such as logistics self-loading systems and special vehicle tops. It has grown into the world's largest supplier of hydraulic systems for dump trucks. As the first domestic supplier to provide a full range of dump truck hydraulic systems and professional technical support services, Haiwo has maintained good cooperation with many OEMs. FAW Jiefang, China National Heavy Duty Truck, Foton Auman and other brands have dump trucks. HyV hydraulic cylinder products are used. It can be seen that Haiwo hydraulic cylinders have laid a good user base by professional technology and reliable quality.
On February 22, 2019, the 4th Founding Trust China Truck User Survey and Selection Awards Ceremony was about to be launched. As in the past, it was found that the Trust Group began to visit in June 2018 and still heard many users of Haiwo’s “critical momentsâ€. The recognition of not leaving the chain.
Hayworth hydraulic cylinder
Among these users, Li Zhonghua is very typical. It is found that the trust group reporter understands that Li Zhonghua’s muck transport fleet has more than 20 dump trucks , and the tank is used in Haiwo. “These heavy-duty trucks were purchased in May 2015 and are the first batch of new type of slag trucks in Jinan. These vehicles have been in good condition for more than three years. Especially the Haiwo cylinders have never appeared before. The driver said yes. Compared with other brands, Haiwo has never experienced cylinder breakage, oil simmering, etc. It is said that some brands of cylinders will have unstable center of gravity, causing the vehicle to tilt or even fall over, not only Affecting the progress of the project, it also threatens the safety of the driver. With Haiwo, there is no need to worry about these problems. The big brands are guaranteed. As long as they are used normally, there will be no problem.†Three years of stability, let Li Zhonghua The master said so in a single breath, it is not surprising that he has such a high evaluation of the Haiwo hydraulic cylinder.
More than this one, there are many sounds that Hyva hydraulic cylinders are recognized.
“The lifting speed of the Haiwo cylinder is fast and stable, and we are very satisfied.â€
“Under harsh conditions, vehicles equipped with Hayworth cylinders still handed over full-time transcripts.â€
......
Reliance is in the air, and they are unanimously praised for the stability of the Haiwo hydraulic cylinder!
Hayworth hydraulic cylinder
Haiwo hydraulic cylinders can be trusted by users and supported by the market. Apart from its own powerful performance, it is inseparable from its investment and determination with the development of science and technology. The Haworth Smart Cloud System, which has undergone a four-year R&D cycle and two years of actual road testing, was introduced to the market in 2017. Haiwo Intelligent·Cloud System has the functions of safety warning, overload reminder, instability warning, loading statistics, maintenance reminder, etc. It can avoid the risk of overturning to the greatest extent and reduce unnecessary losses for users.
With quality products and advanced technology to escort, and a good reputation of thousands of users, whether it can win the "user trusts hydraulic equipment" award four times, February 22, 2019, Beijing Beichen Intercontinental Hotel, it is like Haiwo !
Reading volume: Source: Chinese network of truck: Wang Huimin
At present, the five most commonly used thermosetting plastics in various fields are PU, epoxy resin (EP), silicone, unsaturated polyester (UP) and phenolic resin (PF).
Thermosetting plastic has the following advantages:
Thermosetting plastic has a large rigidity and is extremely elastic and plastic deformation.The temperature has little influence on stiffness, and under the same load and temperature, the creep variable is much smaller than thermoplastic.Good heat resistance;The plastic parts are quite stable when heated.The size of the plastic parts is good. Thermosetting plastic is less affected by temperature and humidity, and Thermosetting plastic can be reduced after forming, making Thermosetting plastic easy to make plastic parts with high precision than thermoplastic ruler.Excellent electrical performance.Resistance to arc and voltage, etc.Good corrosion resistance, weak acid, weak base and organic solvents;Good processability, can be processed by various molding methods and other advantages.
Most thermosetting plastics have the following characteristics:
(1) excellent chemical resistance.
(2) it is usually brittle hard plastic, which can be filled with various fillers to form composite materials.
(3) compared with thermoplastic resin, the molding cycle is longer.
(4) all kinds of modification can be carried out, depending on the combination of resin, crosslinking agent, additive, etc., which can form composite materials with different properties.
(5) good heat resistance, the use of high temperature, Tg of thermosetting polyimide (PI) is about 350 ℃.
(6) can be used as raw materials to meet the application of various fields.Only 5% is used as injection molding material.
(7) the waste is generally used as filler after pulverization, which is difficult to recycle and pollutes the environment.
Due to the high heat resistance of thermosetting plastic, good dimensional stability, good line performance, anti-aging properties are better than thermoplastic plastic and low price, so it is widely used.The disadvantage is that the mechanical properties are poor and need to be enhanced.
It is mainly composed of thermosetting resins, which are involved in various necessary additives to form the plastic of the products.In the process of manufacturing or forming, the liquid will be liquid, which will not melt after curing or melt or soften again.Common thermosetting plastics include phenolic plastic, epoxy plastic, amino plastic, unsaturated polyester, alkyd plastics, etc.Thermosetting plastic and thermoplastic plastics constitute two major components of synthetic plastic.
Thermosetting plastic heating for the first time can soften the flow, heated to a certain temperature, react a crosslinking reaction and curing hardens, this change is irreversible, since then, heating again, already no longer soft flow.It is the use of this characteristic to make the molding process, using the plasticization flow of the initial heating, filling the cavity under pressure, and solidifying to become the product that determines the shape and size.
Thermosetting plastic is distinguished by a chemical reaction that is hardened by heating, pressing or adding the hardener at a definite temperature.After hardening, plastic chemical structure changes, the texture is hard, dissolves in the solvent, heating also no longer softens, if the temperature is too high then decompose.In thermoplastic plastic, the chains of resin molecules are linear or branched, and there is not any chemical bond between the molecular chains, which soften the flow when heated.The process of cooling and hardening is a physical change.
Formaldehyde cross linked plastic includes phenolic plastic, amino plastic (such as urea-formaldehyde - melamine - formaldehyde, etc.).Other cross linked types of plastic include unsaturated polyester, epoxy resin, prevalence, diallyl ester resin, etc.
The commonly used thermosetting plastics are phenolic resin, urea-formaldehyde resin, melamine resin, unsaturated polyester resin, epoxy resin, silicone resin, polyurethane, etc.
Production:Phenolic resin PF (Bakelite sheet)
Phenolic resin is a part of the longest plastic varieties in history, commonly known as bakelite or electric wood, and the appearance is yellowish or black, which is the typical representative of thermosetting plastic.Bakelite sheet molding often use a variety of filling materials, according to different filling materials used, the product performance is also different, Bakelite sheet as molding material, mainly used in the field of need heat resistance, but also as a bonding agent used in plywood, grinding wheel and the brake pads.
Thermosetting Plastic,Thermoset Molding Plastic,Mould Thermosetting Plastic,Thermoplastic Type Plastic
Dongguan Noegem Plastic Products Co.,Ltd , https://www.noegempLastic.com