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DMT · Joined: 23 Apr 2018 Posts: 1671

Before welding the crushing equipment Maillot Paul Pogba France , you should pay attention to the following tips.

1) You should thoroughly clean the parts to be welded before welding.

2) The effect of hot welding is better than the effect of cold welding. Therefore, when the major parts are welded, you may try to use the hot welding. You can heat the weldment to 100 ° C to 700° C in advance.

3) In the conditional case, you should use downhand welding which will be good for the quality of the weld and is conducive to the operation.

4) Electrode diameter and current size of the welding rod should be selected depending on the thickness of the weldment, the surrounding temperature and welding location. The model of the welding rod should be selected according to the materials of the welment and related technologies.

The most common method of the weld is the vibrating surfacing and carbide hardfacing method. The practice has proved that using the high current for welding can improve the quality of welding and speed the welding. But the current should not be too high. Sometimes, low current is also be required. The overcurrent will cause the overheating of the welding rod core. Thecovered electrode will be dropped early, which will increase the spatter and burning and reduce the stability of the arc so that the welding becomes difficult. At the same time, both sides of welding will be undercut. The roots will be too thin and burn easily. For the alloy steel, if the metal structure is overheating, the metal of the weld zone is perishable and the mechanical strength is reduced. If the current is too small, the penetration depth will be not enough. It is also easily to lead to impermeable weld and bad melting. At the same time, due to the small heat of the arc, the condensation of the melt injection is rapid, which will form the weld central residue and stomata.

When the <"http:www.china-hxjqp4">impact crusher is required, you should be strict with the implementation of the operation law of the equipment, maintenance procedures and planned maintenance system to ensure the maintenance quality. Any sloppy thinking will bring loss and impact of different level. The contact of mating surfaces of the journal and the bearing is poor will cause uneven load distribution of unit area and an increase of additional load to accelerate the wear parts. Therefore, we must conscientiously implement the maintenance of equipment, really do good job in the equipment use, care and maintenance, inspect and repair the crusher in a timely manner in order to reduce the wear and tear of parts and extend the service life of the machine.

The processing requirements of the non-metal processing and metal mineral processing are different. The dissemination size of the useful ingredients in the metal mineral is fine, which must be grinded to a certain grain size. In this way ,the ore can be sorted out through the <"http:www.hxjqchinan28">ore beneficiation method. For the processing of the non-metallic minerals, some product with narrow grain size is required as the finished product. For example, the precision casting sand size requirement is between 1 ~ 0.5mm and 0.5-0.28mm; the glass raw materials quartz sand particle size requirement is between 0.71mm and 0.105mm; the quartz glass industry with high purity quartz sand particle size requirement is between 0.18mm and 0.105mm; the corundum sand size requirement in abrasive industry is between 1.4mm and 0.105mm. The non-metallic mineral finished products are very strict with the requirements for iron content. In addition, some non-metallic mineral processing also has finished grain shape, such as abrasives industry, precision casting sand industry.

STOCKHOLM, Jan. 5 (Xinhua) -- Sweden-based automaker Volvo Cars reported record sales in 2014, saying a successful global transformation is behind the figures.

While sales in the United States were down by 7.9 percent to 56,371 cars in 2014, substantial growth in China and Western Europe meant an overall increase of 8.9 percent versus 2013, the company said in a press release on Monday.

Owned by China's Zhejiang Geely Holding Group Co, Volvo Cars sold 81,221 cars in its largest market China during 2014, up 32.8 percent on the previous year.

In Western Europe, Volvo Cars sold 243,514 cars, up 11.4 percent from 2013.

Sales in the United States were down by 7.9 percent to 56,371 cars in 2014 compared to the year before.

The best-selling Volvo model, the XC60 crossover, passed its full year 2013 sales figure of 114,000 cars already by mid-November, reaching the all-time record of 136,993 by the end of 2014.

"It has been a good year. Record sales underline how broad-based our performance has been in 2014. Moreover, we are profitable and we intend to stay profitable. This is crucial as it means our growth is sustainable," said Hakan Samuelsson, president and chief executive at Volvo Cars.

Volvo Cars stated in its press release that it is midway through a global transformation that involves the complete renewal of its product range over the next five years, the introduction of a new modular chassis technology and world-first safety technologies.

China has been identified as the number one market for Volvo worldwide after Volvo Cars continued to grow significantly faster than the overall car market in the country in 2014.

The company said the establishment of three new manufacturing plants, a growing dealership network and continuous expansion of the product offer are the underlying factors for the continued momentum for Volvo Cars on the Chinese market. The best-selling model there was the Volvo XC60 followed by the S60L sedan and the V40.

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