Since the outbreak of the global financial crisis, Sino-US trade frictions have come one after another. China's steel products, coated paper, seamless steel tubes, and solar energy products are all involved, and the auto industry is still in trouble. From the tire special protection case in 2009 to the recent “double reverse†survey on steel wheels, the trade friction between China and the United States has had a major impact on the Chinese auto parts industry. On March 19, 2012, more than 180 U.S. congressmen collectively appealed to President Obama. "As China's auto parts have impacted the U.S. market and the U.S.-China trade deficit has increased in this area, we proposed that the U.S. government take measures for Chinese spare parts." Severe countermeasures. On the other hand, in the Chinese market, major multinational component companies, including the United States, erode more than 70% of China’s market share. Among them, U.S. component companies have obvious advantages in the high-tech powertrain system and engine market. Facing the fierce competition in the domestic market and the increasingly harsh international trade environment, what will China's auto parts industry do? Frequent trade friction in auto parts According to overseas media reports, 188 U.S. congressmen claimed on Friday that China has implemented various policies to create unfair trade advantages for auto parts manufacturers, including restricting the import of overseas auto parts and subsidizing auto parts produced locally. And so on, "These strategies have been effective. China's auto parts exports have grown rapidly, increasing by about 900% since 2000." This "amazing" data comes from the U.S. manufacturing alliance. The industry organization established in 2007, together with the United Steel Association and other organizations, continues to promote U.S. trade sanctions on China's auto parts industry. The first outbreak was the "tire special protection case." In June 2009, the U.S. International Trade Commission (ICC) imposed an ad valorem special tariff for China's passenger-car passenger and light truck tires for three consecutive years on the ground of Chinese tires disrupting the U.S. market. Subsequently, the United States began its investigation of China’s “double anti-dumping†(anti-dumping, countervailing) investigations on exports of US steel wheels. In March 2011, the US ruled that Chinese steel wheel manufacturers or exporters would sell steel wheels in the United States. There are dumping and export subsidies. At the end of January 2012, the U.S. manufacturing alliance and trade unions released a report that the U.S. auto industry has lost 400,000 jobs because of China since 2000; and if China does not stop illegal trade, there are 1.6 million U.S. auto parts and accessories industries. The work is threatened. It was this report that triggered the "strong" resonance of the U.S. bipartisan congressmen. “The United States’ sanctions on Chinese parts do have a big impact on our exports.†Chen Kangren, president of China Auto Parts Industries, frankly stated that “for a long time the price of our export products has been very low, plus the RMB exchange rate. As a result, the export environment has deteriorated, and profits have approached the freezing point. If sanctions are imposed, the difficulty of developing trade with the United States will increase further." Foreign-funded enterprises make a lot of money in China Unlike foreign “sound of complaints,†foreign-funded auto parts and components companies in the Chinese market are like fish, not only occupy the majority of market share, sales and profit margins have also increased. According to data released by the relevant departments, as of the beginning of 2010, foreign-invested parts and components companies already accounted for more than 75% of the Chinese market. The number of foreign-funded parts and components companies in China has reached 1200. Among the top 100 auto parts companies in the world, more than 70% of the companies have launched trade in China. Among them, the United States in China's parts and components companies outstanding performance. Delphi, BorgWarner, Johnson Controls, Cummins and other multinational companies have set up joint venture factories in China to gradually increase their market share in China. Chinese auto parts companies have lost ground in the market. It is understood that in the field of Delphi's most advantageous powertrain, its market share in China has ranked second in the country; from the perspective of supporting the entire vehicle, the market share is the first in the country. The joint venture company Dongfeng Cummins produced more than 500 horsepower diesel engines, and its market share has already ranked first in the country. With the rapid increase in market share, the Chinese market has also become an important growth point for US multinational giants. According to data released by Delphi, the company's sales in the Asia-Pacific region were US$3 billion in 2010, of which US$2 billion came from China; in 2011, its development in China was even more rapid, with sales up 21% year-on-year. In an interview with the reporter, Alibaba, president of Delphi’s Asia Pacific region and president of China, said that in the future, sales in the Asia Pacific region will account for one-third of Delphi’s total sales, and China will become the region with the largest increase. Cummins, another giant engine manufacturer, is no exception. Fourteen of Cummins' 23 engine series are locally produced in China and a total of 4 joint venture factories have been established. In 2011, Cummins’ sales in China had exceeded US$3.7 billion, and China has become its largest and fastest-growing market in the world. Domestic companies are in urgent need of merger and integration Compared with the scenery of foreign parts and components companies, Chinese auto parts and components have been forced to retreat to the edge of the industry in both the international market and the domestic market. The reason is that the vice president of the China Federation of Machinery Industry, Zhang Xiaoji, believes that “the international environment is just one aspect. In the final analysis, China’s exports have poor competitiveness in parts and components, low technology content, and too little added value.†According to relevant data, 2011 From January to November, the total trade volume of China's auto parts industry was 66.043 billion U.S. dollars, of which the export value was 41.052 billion U.S. dollars, the import value was 24.9 billion U.S. dollars, and the trade surplus was 16.062 billion U.S. dollars. From the point of view of export value, the largest part is the components of the driving system, which accounted for 42.28% of the total imports. In the components of the driving system, the total amount of tire exports accounted for 67.7% of the total export volume. At the same time, from the point of view of the types of export enterprises, the total export volume of wholly foreign-owned and joint-venture companies currently accounts for only 30% of China's total exports of parts and components, but exports account for 70% of the total. "The technical content of products is very low, low profit margins, chaotic channels, and low technical standards are issues that need to be solved in China's auto parts industry," Chen Kangren told reporters. He suggested that "in the face of the dilemma, China's auto parts industry wants to survive in the cracks, strengthen brand awareness, and adjust the industrial structure should be the best way out." However, the current backbone of China's general parts and components has 200 There are numerous small and medium-sized enterprises. Lack of promotion of specific policies, who will lead these companies to carry out integration work? This is a stumbling block to hindering the growth of the parts and components industry.
The Resin Sand Casting equipment consists of shell core machine,core shooter,casting machine,advanced coated sand formula and manufacturing technique.
This sand casting process is suitable for the production of cars,tractors and hydraulic parts.The molding materials include copper,iron and steel.
The surface of the sand is covered with a layer of solid resin molding sand or core sand before molding and core making,called coated sand.It was the first thermosetting resin sand.The precoated sand casting is a kind of casting process to put the roughing sand,resin and curing agent into sandbox after mixing evenly,and then molding and core making in the mold,finally pouring after mold closing.
The precoated sand casting is a molding method,which attaches sand or other refractory materials to the prefabricated master batch,forms a cavity by sintering,and than injected into the molten metal and cooling.The sand casting process is mainly used for producing artwork and complex castings with high precision,such as engine and pump valve.
The resin sand casting is to mix the powdery thermosetting phenolic resin with raw sand,and then solidify after heating.Now it uses thermoplastic phenolic resin and latent curing agent (like urotropine) with a lubricant (such as calcium stearate) to form coated sand by sand casting process.When heated the resin wrapped in the surface of the sand is melting,under the action of the methylene decomposed from the urotropine,the molten resin rapidly transforms the linear structure into body structure,thus making the coated and curing.The suitable equipment is hot core box molding machine.The waste sand regeneration can not use mechanical regenerative way,so it should be subjected to 700℃ high temperature melting.The regeneration cost is higher,but the expansion coefficient of the regenerated sand is small and the performance is better than new sand.
Resin Sand Casting Resin Sand Casting, Resin Bonded Sand Casting QINGYUN HUIHUANG EXACT CASTING CO.,LTD , http://www.sdhhcasting.com
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Features of Coated Sand Casting Process
Application of Resin Sand Casting
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China's indigenous auto parts companies suffer from their enemies
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