SAIC Shanghai Lingang passenger car body shop
Introduced SAIC passenger car port production base body workshop, body workshop most main part of car production technology in the of welding technology, from stamping workshop in the manufacturing good of various stamping plate pieces, will in here completed various welding, and stereotypes. Image says, that is, from a stack of layers of steel into a procedure of stereoscopic body frame.
In auto body welding process is very important in the process, BIW welding technology is good, directly determines the rigidity of vehicle, driving performance, comfort and safety have a particularly large impact factor, we have been concentrating on independent passenger car SAIC, the welding process is how to define quality.
A big advantage of the Shanghai Lingang plant is new, because the history of the brand and not a very long, even if SAIC Roewe brand from its inception to the present day, but also a few years old, and young for the factory is the biggest advantage because the Lingang plant was put into operation was completed in 2008, can be said to be a very young automobile production base.
The young means that, when built into the latest design and production philosophy, and it uses a variety of production equipment are very advanced, which is filled with technology, automation, high-tech equipment, first impression to people is quite good in the first place. A 34,560 square-metre plant requires only 446 employees, is a very high degree of automation. This stage Provisional body factory production capacity of white body 40 units/hour capacity, calculated according to start time of 9 hours a day, a day to produce 300-400 body in white,
Shanghai Lingang plant the use of lightweight steel frame, evenly laid out on a large number of skylights in the ceiling, so you can use natural light as much as possible, reduce electric energy consumption within the workshop. This framework and the capital Airport Terminal T3 quite similar ideas.
Body shop line of double features, one for welding production line, including the partial Assembly, always tailor-welded, welding and testing links; two running lines, welding forming of "semi-finished" conveyor belts, partial assembly line brings the total of tailor-welded lines.
Use automatic welding robot welding shop in large numbers, many lines are completely closed. High automation rate is an important part of ensuring quality product specifications, to Lingang plant manufacturing case study of flagship model roewe 950, its body Welding automation rate of 98%, and MG3 automation rate also reached 86%
Take two, we see body welding production process in the factory, see how a piece of sheet metal plates from parts eventually welded into a single body. First of all from the press shop produces pressed steel plate, depending on the classification into classification for transport on the Assembly line. Classified Assembly includes base plate Assembly Side wall assembly Bodyside and Underbody, in addition to form a complete body in white doors, roof and hood, trunk lid and rear fender and body panels.
Body welding factory manual combined welding with automatic assembly line production, manual welding is mainly used in small or not suitable for pipelining of robot parts. While the larger umbrella term component is done through automatic welding line, which includes base plate Assembly and Side wall Assembly. Base plate Assembly is roughly equivalent to a broad meaning of "chassis", while the side include body from the a-pillar to the side of the c column frame structure.
Both of these assemblies belonging to the welding shop "semi-finished" from the production line when they completed "downline" post will be up to the second floor of a lifting mechanism on the running line through two routes transferred to always spell on the welding cable.
Bottom and Side wall Assembly through the second floor of the luck spell brings the total welding line, and welded as a whole here. Always tailor-welded is the highest technology content in the welding shop, is also a ring with the highest technological requirements, all parts stamped sheet, here will eventually merge into a full-body frame, so it's always tailor-welded line is the core of the welding shop, Lingang plant also uses Opengate+Butterfly technology is its crowning touch.
Focuses on what is needed here is Opergate+Butterfly technology, said the total of tailor-welded wire is very flexible, you can in the case of continuous, three-platform, out of a total of 6 models sharing the same line. Always spell all welding robot welding line, out of a total 16 robots always tailor-welded wire is very efficient, producing a white body requires only 76.5 seconds.
In this article always tailor-welded wire, backplane Assembly and Side wall Assembly through the fixture fixed, 8 sets of welding robots working together, floor and side welding training. Complete the basic framework of the body in white, has been able to clearly see the face of a vehicle. Always spell positioning focused, bottom and side of a location precision is not bad but one remove from insanity, can guarantee the technological level of the body in white, and pinpoint the very high demands on the fixture.
In visited Shi, we note to this article this article height soft of line can while production many models, like roewe 550 and MG3 this two paragraph hot of products, also will interspersed with production roewe 950 and MG6, which MG6 also including sold United Kingdom market of right rudder version, actually in United Kingdom sales of MG6 almost all are in Lingang factory production of, just to United Kingdom for simple of assembled, shows Shanghai Lingang factory of production quality is high. Do most domestic production export version MG6 full accreditation standards can be achieved in Europe, shows his quality is reached the world's advanced standards.
Mixed line production of different models involved in positioning using the corresponding fixture, fixture without affecting the production quickly replaced, this is Opengate+Butterfly. If you are waiting for that next car replacement models, the fixture takes only 15 seconds to replace the complete, does not affect the normal operation of production line, which ensures that this mixed production line began production in a high state.
After always tailor-weld stations, white bottom and side of the body is complete stereotypes, BIW at this time framework has been largely stereotyped, welded roof next operation. Fixed roof panels and chassis through a combination of welding and gluing the two processes to ensure frame is rigid enough.
Pro fight, Lingang factory's highly automated welding line on the roof and install this part is still extensive use of robots work only one worker secondary robots ready to roof part and complement the work of finish coating.
Rubber roof coating robot mounted on the frame, and then through the welding set and white body completes the whole shaping process. Lingang plant of welding under roof models have different methods of welding, roewe 550, MG6, and MG3 robot spot welding, roewe 950 is more costly laser welding is used.
Stereotyping white body from always tailor-welded line after transferring to the welding area, although this time frame have completed physical stereotypes, but still need to increase body weld by welding, which aim to increase frame strength. Automatic welding robot welding all use state of the art, going to 424 additional solder to the white car. From welding done on the line of white cars, you can see the very dense and even solder, BIW production process is drawing to a close.
After welding and strengthening the rigidity of the body need to be tested, quality control workers to tap the body weld location test. Quality points on all rolled off the of products are to for detection, each car are selected different location of welding points, but in 1 hours within will cover to all welding points, so even found has welding defects, tops only will involved 1 hours within production of parts, this let Lingang factory in production process in the to more timely of found problem, and do not put defects products passed to processes of production standard.
In we visited, Lingang factory of fill welding line is on is starts using of automatically laser quality system for debugging and prepared work, future will relies on more advanced of laser quality instrument replaced artificial detection, will body factory of detection will do have more full, and more quickly, shows SAIC passenger cars in production links, on quality and efficiency of upgrade are is willing investment, and this is on whole car quality of a guarantees.
White body finally tested installing the doors, hood, trunk lid and side panels, body panels, then go to the body shop's last operation: surface adjustments. Watch lines of operation looks a bit like a rolled off the Assembly line before the test line, also saw a made up of a lot of fluorescent lamp "light Avenue".
High density reflective lighting on the car body forming a road through reflective uniform, inspectors can body sheet metal is found to have defects such as uneven, sand, when defects are found in this link, you will promptly to repair body, ensure access to white body paint shop is a qualified product.
Watch online workers will carefully examine every one of the body's surface, apart from the eyes, some plates are also checked for unevenness of the details need to touch, they work like white body "beautician", any body plates are not the perfect place, but their discernment.
