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By 袁春凤 (Tiffany)
China-based EV startup XPENG Motors officially launched its first mass-produced model, the XPENG G3, on December 12, 2018. Its second model, positioned as a mid-sized BEV sedan that is to compete with the Tesla Model S in terms of intelligent level, is expected to make its debut at Shanghai International Automobile Industry Exhibition 2019, according to insiders from the startup.
XPENG Motors aims to raise RMB 20 billion of investment in 2019. Up until now, it has completed the Series B round of financing with its value of fundraising totaling up to RMB10 billion. As to the financing performance of another two prominent EV startups, NIO has already gone public obtaining over RMB21.8 billion, while WM Motor has closed its Series D round with total funding value exceeding 15.5 billion.
By 袁春凤 (Tiffany)
Basic knowledge of shock absorbing rubber products
1. Static stiffness: refers to the ratio of the change of pressure (or tensile force) to the change of displacement in a given displacement range. The static stiffness must be measured within a certain displacement range. The static stiffness values measured in different displacement ranges are different, but some families require the change curve measured in the whole displacement range.
2. Dynamic stiffness: It refers to the ratio of the change of pressure (or tensile force) to the change of displacement of damping rubber in a certain displacement range and a certain frequency.
3. dynamic magnification: the ratio of the dynamic stiffness to the static stiffness measured by the damping rubber in a certain range of displacement.
4. Loss coefficient: There is a phase difference between the deformation of rubber and the stress of rubber in the course of the force acting on damping rubber, and the stress of rubber is generally ahead of the phase angle of the deformation of rubber.
5. Torsional stiffness: refers to the ratio of torsional moment to torsional angle of damping rubber within a certain range of torsional angle.
6. Durability: It refers to the number of times of vibration when the rubber is in good condition after n times of reciprocating vibration under certain preloading load, amplitude and vibration frequency in a certain direction.Thanks for the help and support of Chongqing Feilong Jiangli Auto Parts technical department.
By 袁春凤 (Tiffany)
Introduction of defects in rubber products vulcanizing
1.Lack of glue: due to insufficient weight or poor fluidity, some defects should be found in rubber parts.
2.Degumming: the failure of rubber and frame inserts will result in disengagement or separation.
3.Bubbles: also known as "bulging", because the gas is coated in the rubber epidermis and the formation of local epidermis blistering phenomenon; Thanks for the help and support of Chongqing Feilong jiangli’s Technical department.
4.Rotten bubbles: also known as "pit gas", because the gas has not been discharged from the cavity, so that the die corner of the rubber cavity is less sulfur sticky, and protruding from the surrounding rubber surface phenomenon
5.Gel cracking: a phenomenon of cracking on the glue surface.
6.Under sulfur: the inner surface of the gum is microporous, and the exterior is uplifted and deformed.
7.Sticking mould: the phenomenon that the local glue of vulcanized product is adhered to the wall of the mold cavity.
8.Hot die: also known as curling edge, "bite edge" and so on, refers to the product parting line is not smooth, cracks, serrated waste edge and other phenomena.
By Mengjuan Zhu
One of the categories of automotive rubber products is belt products.
Belt products are mainly used in automobiles to transfer torque power and speed, power from the power source engine to the need for power systems and places. It is installed in cooling fan, cooling water pump, brake compressor, booster pump, air conditioning system and steering system. The car belt is mainly V belt. Usually there are three kinds, that is, wrapped V belt, cutting V and multi wedge belt to cut W belt. Cutting V-belt has no coating on both sides, good flexibility, friction coefficient, with a large force, high linear speed, heat dissipation and fatigue resistance and energy-saving characteristics, commonly used rubber MIBR and R. Synchronous toothed joint is used for valve ignition of automotive engines. Its operating conditions are high speed, high power and high temperature.
Thanks to Abby from Feilong Jiangli providing the basic data.
By Mengjuan Zhu
Automobile rubber products are indispensable components in automobile parts. According to the different types of cars, each car needs to install about 100-200 kinds of rubber products, to use more than 200-500 rubber accessories. In addition to tires, different sizes of cars vary, and the consumption of rubber materials is about 15-60 kilograms. A car's rubber products (excluding tyres) account for about 6% of the total vehicle cost. There are more than 1000 kinds of non tire rubber products in automobile industry, and there are about 8000 specifications. According to statistics, the automotive industry accounts for more than 70% of the global annual consumption of raw rubber, including 60% of tires, 40% of automotive rubber accessories.
High speed, safety, comfort, energy saving and environmental protection are the goals pursued by modern cars. With the development of modern automotive technology, the requirements for automotive rubber products are becoming increasingly stringent and demanding. It is not only required that rubber materials with various special properties meet the new technical requirements of automobiles, but also that rubber materials have higher physical and mechanical properties, such as aging resistance, high temperature resistance, low temperature resistance, new fuel and excellent performance. The dynamic fatigue performance, durable service life and so on. In fact, every high performance of modern automobiles depends on the technical progress of rubber products to provide protection. The performance and quality of automotive rubber products play a crucial role in improving the quality of automobiles. It should be noted here that although rubber products always play a role in a variety of mechanical equipment accessories, but rubber accessories are always about the technical progress and level of the host. Therefore, it can be said that the technical progress and quality level of automobile rubber products can basically reflect the technical level of automobile.
If you want to learn more about the rubber products,please visit www.fljlcq.com.
By Auto News
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By Tony Jiang
We manufacture and export bumpers, leaf boards, mid-grid, grilles, lower guard boards . The quality is the same as the original parts. The price is much cheaper than that of the original manufacturer.
please contact me for detail information. website: www.bumpers.com.tw
By Max A-Profi
Bad shock absorbers – dangerous driving. The vehicle is due to their failure poorly manageable, the wheels have little traction with the road surface. This also leads to a malfunction of the brake system. The main task, which is carried out shock absorber in car, is to control and hold the wheel while driving. This avoids losing control of the vehicle.
Shock absorbers are also designed to damp vibrations that occur when driving on an uneven surface, off-road and when the speed changes. Springs do not always cope with the load. Consequently, the safety of the vehicle and passengers directly depends on the shock absorber. Therefore, it is necessary to pay special attention to the selection of these parts of the chassis of the car.
The structure and types of shock absorbers
Shock absorbers consist of a cylinder with a piston inside and a valve mechanism. The combination of such elements in this system allows you to damp the vibrations in a timely manner and prevent the car from swaying violently.
Varieties by the principle of action
The most common are hydraulic and gas shock absorbers:
Hydraulic shock absorbers put out the vibrations of the elastic elements of the suspension using oil that flows from one tank to another through a valve system. Gas shock absorbers they also use liquid, but it is preliminarily “squeezed” by a small volume of gas. Varieties in structure
Two-pipe . Single-tube with gas pressure. Two-pipe with gas pressure. Single-tube have advantages, because the liquid in this device does not overheat. They are also practical: the housing can be installed up and down.
Two-pipe ones consist of two cavities, one has a piston with valves, and the second is necessary to partially fill it with oil and air. If they are absent or too few in design, then the shock absorber stops working or is compressed without resistance. In the event of such malfunctions, it is necessary to contact a car service or service station that has equipment for repairing shock absorbers. This device will restore the performance of parts.
Diagnostics of malfunctions of shock absorbers and the main causes of their failure
Checking the fault is quite simple:
If during driving the car does not shake and extraneous noise is not heard, then the shock absorbers function normally. If in motion there are problems with braking, smooth running, fitting into a turn, and also the car cannot gain a certain speed, then it is necessary to pay attention to the condition of the shock absorbers. Such problems can lead to an accident caused by an increase in wheel slip vibration. Most often, the main cause of the breakdown may be leakage of fluid through a damaged seal. This can happen in such cases:
Wear of the sealing material due to friction. Sudden change in temperature. Dirt and dust are trapped in the shock absorber. Gas or air are trapped in the shock absorber. To avoid breakdowns, it is necessary to seek the help of professionals in a timely manner, who will make a diagnosis and restore the parts if necessary. This can help special nozzles that are used to repair gas-oil shock absorber. They allow you to pumping gas, add fluid, and also control the pressure process.
Equipment for repairing shock absorbers is a special device that will allow specialists to restore the main part of the suspension quickly and efficiently. In total
The oil and gas parts of the undercarriage are important elements in the design of the car. They are responsible for its performance, safety during movement. Today, A-PROFI Company provides an opportunity to protect yourself and your car by manufacturing quality restoration equipment that meets all the requirements of modern automotive industry. You can study or buy equipment for the restoration of shock absorbers on our website.