On January 26, 2013, Michelin 's largest investment project in China, the new Michelin Shenyang plant with a total investment of nearly US$1.5 billion was put into production. The new plant products include light truck tires for passenger cars, truck and bus tires , and annual production capacity of more than 12 million. "The tires produced at the new plant are all environmentally friendly, high-performance radial tires, " said Sunard, president of the Michelin Group.
At present, Michelin has a total annual capacity of 8 million factories in Shanghai and Shenyang. According to the Michelin China plan, by 2015, the capacity of Shenyang's new plant will gradually reach its peak, and the total production capacity of Michelin in China is expected to approach 20 million.
The high-end tire market began to develop with the high-end car market. The continuous introduction of high-end models in the vehicle market has gradually increased consumer awareness of tires. In recent years, various tire companies around the world have gathered high-performance tire markets.
According to industry experts, although the Chinese auto market has declined steadily, it is still growing relative to Europe. There is still room for growth in different market segments in the tire market. High-performance tires, energy saving, safety, comfort, fuel economy, and durability are all-inclusive. Performance of the tires, market demand is still strong.
According to the relevant data from China Rubber Industry Association Tire Branch, the total tire production in 2012 was approximately 483 million, an increase of 5%-7% year-on-year. The global tire market is growing by almost 4% annually, and the high-end market will exceed 9% to 10%. The growth rate of the Chinese tire market is still higher than the global average.
Some experts predict that the global automotive high-end market will grow at an annual rate of 4.7% from 2011 to 2015, while in the Asia-Pacific region it will be expected to achieve a rapid growth of 19.1%, which is more than four times that of global growth. Similarly, in the high-end tire market, global The annual growth rate is 9.6%, while in the Asia-Pacific region it is expected to achieve a growth of 17%, which is almost double the global growth.
The Die Castings that are created in this process can vary greatly in size and weight, ranging from a couple ounces to 100 pounds. One common application of die cast parts are housings - thin-walled enclosures, often requiring many ribs and bosses on the interior. Metal housings for a variety of appliances and equipment are often die cast. Several automobile components are also manufactured using die casting, including pistons, cylinder heads, and engine blocks. Other common die cast parts include propellers, gears, bushings, pumps, and Valves.
Die casting is a manufacturing process that can produce geometrically complex metal parts through the use of reusable molds, called dies. The die casting process involves the use of a furnace, metal, die casting machine, and die. The metal, typically a non-ferrous alloy such as aluminum or zinc, is melted in the furnace and then injected into the dies in the die casting machine. There are two main types of die casting machines - hot chamber machines (used for alloys with low melting temperatures, such as zinc) and cold chamber machines (used for alloys with high melting temperatures, such as aluminum). The differences between these machines will be detailed in the sections on equipment and tooling. However, in both machines, after the molten metal is injected into the dies, it rapidly cools and solidifies into the final part, called the casting. The steps in this process are described in greater detail in the next section.
Die cast parts can vary greatly in size and therefore require these measures to cover a very large range. As a result, die casting machines are designed to each accommodate a small range of this larger spectrum of values. Sample specifications for several different hot chamber and cold chamber die casting machines are given below.
| Type | Clamp force (ton) | Max. shot volume (oz.) | Clamp stroke (in.) | Min. mold thickness (in.) | Platen size (in.) |
| Hot chamber | 100 | 74 | 11.8 | 5.9 | 25 x 24 |
| Hot chamber | 200 | 116 | 15.8 | 9.8 | 29 x 29 |
| Hot chamber | 400 | 254 | 21.7 | 11.8 | 38 x 38 |
| Cold chamber | 100 | 35 | 11.8 | 5.9 | 23 x 23 |
| Cold chamber | 400 | 166 | 21.7 | 11.8 | 38 x 38 |
| Cold chamber | 800 | 395 | 30 | 15.8 | 55 x 55 |
| Cold chamber | 1600 | 1058 | 39.4 | 19.7 | 74 x 79 |
| Cold chamber | 2000 | 1517 | 51.2 | 25.6 | 83 x 83 |
The selection of a material for die casting is based upon several factors including the density, melting point, strength, corrosion resistance, and cost. The material may also affect the part design. For example, the use of zinc, which is a highly ductile metal, can allow for thinner walls and a better surface finish than many other alloys. The material not only determines the properties of the final casting, but also impacts the machine and tooling. Materials with low melting temperatures, such as zinc alloys, can be die cast in a hot chamber machine. However, materials with a higher melting temperature, such as aluminum and copper alloys, require the use of cold chamber machine. The melting temperature also affects the tooling, as a higher temperature will have a greater adverse effect on the life of the dies.
| Materials | Properties |
| Aluminum alloys | ·Low density |
| ·Good corrosion resistance | |
| ·High thermal and electrical conductivity | |
| ·High dimensional stability | |
| ·Relatively easy to cast | |
| ·Requires use of a cold chamber machine | |
| Copper alloys | ·High strength and toughness |
| ·High corrosion and wear resistance | |
| ·High dimensional stability | |
| ·Highest cost | |
| ·Low die life due to high melting temperature | |
| ·Requires use of a cold chamber machine | |
| Zinc alloys | ·High density |
| ·High ductility | |
| ·Good impact strength | |
| ·Excellent surface smoothness allowing for painting or plating | |
| ·Requires such coating due to susceptibility to corrosion | |
| ·Easiest to cast | |
| ·Can form very thin walls | |
| ·Long die life due to low melting point | |
| ·Use of a hot chamber machine | |
| Advantages: | ·Can produce large parts |
| ·Can form complex shapes | |
| ·High strength parts | |
| ·Very good surface finish and accuracy | |
| ·High production rate | |
| ·Low labor cost | |
| ·Scrap can be recycled |
Die Casting,Aluminum Die Casting,Die Casting Parts,Zinc Die Casting
Ningbo City Yinzhou Ruican Machinery Co.,Ltd , https://www.ruicanmanufacturer.com