1 Introduction
Since the production of automobiles in the mid-1980s, Changan Automobile Group has gradually developed a large number of welding production lines from low-end to high-end, from single to multi-variety, from micro-car to self-owned car. With a wide range of high-tech welding equipment, the application range of new technologies in the field of welding is also expanding. After more than 20 years of long-term practice, the unsuitable welding production equipment has been gradually eliminated. Changan and equipment manufacturers have formed long-term strategic cooperation research partners for equipment with mature performance and suitable for welding automobile production lines. The welding equipment is continuously optimized, providing a large number of high-quality products with stable performance, low failure rate and high cost performance for the automotive welding line.
At present, the welding equipment applied by Changan Automobile Group can be roughly divided into four categories: direct welding equipment, tooling fixtures, fastening pressures, and inspection tools. This paper mainly describes and briefly analyzes the use of the above welding equipment in Changan Automobile Group, existing problems, and expected technical upgrades.
2, direct welding equipment
Direct welding equipment refers to welding equipment that uses such equipment to bond workpieces together by welding. At present, the company mainly has the following types of direct welding equipment: hanging spot welding machine, brazing, automatic welding, spot welding robot, Arc welding robot, MIG welding machine, fixed nut projection welding machine, stud welding machine, etc.
â—†Hanging spot welder
Hanging spot welder - The company mainly uses Tianjin High-tech products. The overall performance of the product is quite stable, easy to use and easy to maintain. It is currently the most widely used welding equipment in Changan's automotive welding production line.
Through the cooperation between Changan and the supplier, the supplier developed a group control system for the hanging spot welder based on the suspended spot welder, which is a system for centralized control of the submerged spot welder. The main function of the group control system is to monitor the three-phase voltage in real time, ensure the real-time balance of the grid voltage through the limited capacity control method, and provide direct guarantee for the spot welder in the real-time monitoring system, so that the quality of the welding product is more stable.
Some problems have also occurred in the use of such equipment: mainly the loss of welding process parameters, the occasional direct-through of the thyristor and the self-ignition of the transformer.
◆傀儡 welding, automatic welding
Butt welding is a type of welding by means of external artificial welding to parts that are not smooth on the production line and that cannot be welded by ordinary welding tongs. That is, welding is performed on the auxiliary mechanism by the welding tongs, and the auxiliary mechanism is led to the position of the parts to be welded. Thereby completing the welding.
Automatic welding - the automatic control of the welding trajectory and welding parameters of the welding tongs by the programmable controller, so that the welding tongs are automatically welded according to the process specifications.
The two differences between boring and automatic welding are that automatic welding does not require manual operation, and boring requires manual operation. These two welding methods have fewer failures, stable performance and good welding quality, but the quality requirements of the parts (ie, the consistency requirements of the parts) are high. If the accuracy of the parts is not up to the requirements, the welding equipment may be faulty.
At present, programmable controllers have been widely used in automotive welding production lines. The trend is not to use tantalum welding and completely automatic welding, which reduces the manual operation intensity and reduces the operating cost of the enterprise.
Next page
Aluminum Gate is made from good aluminum material by cast,aluminum gate no rusting,so it is easy to maintain and can be used for a very long time,it's good at anti-corrosion,it is widely used in various places, like coastal areas,mountain areas,wet or rainy areas.Aluminum gate has light weight,it's easy to transport and assemble,besides aluminum gate is hard and shock-resistance,so it's much securer.
Aluminum gate is made by aluminum casting,it's easy to design and make artistic effect,so there are much more styles and patterns for selection,like followers,plants,animals,mascots,totems,or other symbolic patterns,besides there are various colors,like black,white,grey,golden,bronze,copper colors,and it is more beautiful and grandeur.
Aluminum Fence,Courtyard Fence,Aluminum Fencing,Aluminum Fence Panels
Kaiping Yihuo Trade Company , http://www.donkeytrade.com