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On January 26, Shenzhou Car Rental (HK 0699) announced on the Stock Exchange last night that the company recently started cooperation with UCAR Technology and will launch a co-branded "UCAR Shenzhou Special Vehicle" service. China Shenzhou Express Client Display has opened 58 major cities across the country. This means that China Car Rental will formally enter the special car market through UCAR Technology.
The announcement stated that UCAR is an independent third-party company. According to the agreement, China Car Rental will provide long-term and short-term rental vehicles to UCAR Technology at a fair market price to carry out special car business. In addition, in the future financing activities of UCAR, Shenzhou Car has priority investment rights. China Car Rental said that this cooperation will help the company further enhance brand awareness and customer viscosity, create cross-selling opportunities, improve vehicle management efficiency, and seize strategic development opportunities. This cooperation is in line with the company’s continuous product innovation and development strategy that further extends the value chain.
Experts in the industry pointed out that the route design of China Auto Rental Co., Ltd. to take advantage of UCAR’s strong entry into the special car market is “three birds with one stoneâ€. First, at the level of laws and regulations, China Car Rental only provides vehicles and circumvents the restricted area where “car rental companies may not directly engage in passenger transportâ€; at the operational level, the special car business is independent of the listed companies of China Car Rental, avoiding the early market investment in the listed companies. The loss came at the customer level, and the Shenzhou car rental brand endorsed the Shenzhou special car to quickly establish brand awareness and reputation, and establish a good customer protection.
On January 8 this year, the Ministry of Transport issued a document affirming the significance of the special car, encouraging the development of private cars and strictly prohibiting private cars from engaging in special car business. According to the document, the special car will integrate rental cars through the Internet and provide driver services through third-party service companies according to the wishes of the passengers. It is an innovative service model that spans the traditional boundaries of taxis and car rentals in the new era and meets the high quality and diversity of the transportation market. Changes and different needs have positive effects.
According to the analysis, Shenzhou Special Vehicle fully complies with the guidance spirit of the Ministry of Communications and is the development direction of the future special car model; as the largest Internet car rental company in China, Shenzhou Car Rental owns nearly 60,000 rental vehicles, and the fleet size exceeds the second to tenth in the industry. The sum of the names and advantages of the resources of the rental fleet are unique. Together with strong brand, customer resources and offline execution capabilities, Shenzhou Car Rental's entry into the special car market will completely change the competitive landscape of the existing car market.
Now every country optimistic about the prospect of the magnesium alloy die castings,especially in auto,aviation,telecom,transportation and mechanical industry,
which adopt to use magnesium alloy die casting to replace steel casting for reducing weight effectively and then can save energy and reduce environment pollution. The car can decrease 0.4L oil consumption per kilometer if it can relieve every 100KGS. So America,Japan and European countries have enlarge use of magnesium alloy Die Casting Parts, for example, steering wheel, instrument panel, seat skeleton, crankcase, gearbox shell, wheel hub and so on. So magnesium alloy die castings grows at 20%~30% a year, 80% of them are die casting parts. Meanwhile magnesium alloy die castings expand use in appliance light industry and daily hardware, such as notebook shell, VCR box, mobile phone, power tool shell,camera shell, upholstery, mower shell etc. These magnesium alloy die casting parts with a series of advantages, not only greatly reduce weight, but also have the precise & steady dimension and smooth finish surface.
Die-cast magnesium alloy material:
Magnesium and aluminum have big differences in the chemical, physical properties, mainly in terms of chemical reactivity, surface oxidation of the liquid metal
material tightness, thermal effects during solidification, resistant to electricity chemical corrosion resistance capabilities.
Magnesium has a strong chemical reactivity than aluminum and the metal bath surface can not be formed as dense as molten aluminum alloy oxide protective film
to prevent oxidation reaction to proceed, so magnesium alloy flammable or explosive. Magnesium alloy is also easy to dissolve other metals, including magnesium
alloy severely reduce the ability of anti-electrochemical corrosion of nickel, copper and other elements. In addition, the same volume of liquid aluminum and magnesium alloy during solidification.
Magnesium alloy heat release was significantly lower than aluminum.
Magnesium alloy chemical elements:
Mechanical properties of pure magnesium is very poor, can not meet the requirements of industrial parts of the yield strength and tensile strength. By adding alloying elements can significantly improve the mechanical properties of magnesium, the magnesium alloy`s strength to weight than the titanium alloy in all kinds of alloying and ranked second, open up broad prospects for its application.
The effect of alloying element second is to improve the performance of magnesium alloy casting. Pure magnesium have high melting point, poor mobility, high shrinkage.
By alloying can reduce the temperature of the liquid, increase liquidity. According to the characteristics of magnesium alloy decreased significantly at temperature above 150degrees Celsius and the strength of the alloy,
the third role is to enhance the creep resistance of magnesium alloy.
Magnesium alloy commonly used alloying elements are aluminum and zinc. Alloying of aluminum alloy can improve the strength and casting properties. Zinc can also improve the performance of the alloy casting. In order to ensure the casting performance, the aluminum content should be more than 3% in the die casting magnesium alloy, zinc content is less than 2%. Otherwise it is easy to produce crack.
The commonly used magnesium alloy die-casting material
Common cold chamber die casting machine injection parts must be improved to meet the needs of the magnesium alloy die casting production as follows:
1) Fast injection speed increased from 4~5m/s to 6~10m/s.
2) Reduce the time of supercharging and build pressure.
3) Improve the injection speed and injection force control.
4) Equipped with a special furnace protection gas device
The aluminum die casting part production flow chart
Commonly used materials of magnesium alloy die casting: ADC12, ZL101, ZL102,A380, AlSi9Cu3, AlSi12(Fe);
The precision of the magnesium die casting: ±0.1mm;
Smoothness of surface of rough part: Ra1.6~Ra3.2;
Shrinkage rate of Mg alloy die casting products: 0.5%;
Material wastage rate: 5%;
General magnesium die-casting machining allowance: 0.5mm~0.7mm;
Surface preparation methods: Sand blasted, Shot blasting, Powder coating, Painting, Plating, Electrophoresis, Polishing
Our company's magnesium alloy die casting production equipment and management system
Aluminum Die casting production equipment: L.K brand die casting machine From 160T, 200T, 280T, 400T, 630T, 800T and 1250T;
CNC machining center: 8 sets;
CNC lathe machine: 6 Guangzhou Machines and 7 Shenyang Machines;
Work days of one week: From Monday to Saturday;
Shift work: 2 shift per day;
Working hours: From AM 8:00 to PM 5:00;
2D and 3D drawing Software: AutoCAD, UG, Pro/E, SolidWorks 2013;
QC control: New type NANO CMM, FPI M5000 desktop metal analyzer, Easson projector, Mechanical properties tester.
The production of Magnesium die casting and QC control
Magnesium Die Casting Part, Magnesium Alloy Die Casting Part, Magnesium Die-Casting Product, Magnesium Injection Part
NINGBO BEILUN LEMA MACHINERY TECHNOLOGY CO.,LTD , http://www.china-lema.com