Introduction to ZTE Automobile-Four Major Workshops and Test Centers

In 2017, under the guidance of the development direction of the conversion of new and old kinetic energy and the introduction of high-tech equipment manufacturing industry (automobile manufacturing), the mayor of Rizhao and the secretary of the high-tech zone district party committee went to Baoding in person to discuss investment promotion with Hebei Zhongxing Automobile Manufacturing Co., Ltd. Project cooperation. Hebei Zhongxing Automobile Manufacturing Co., Ltd. is looking for a factory for production of passenger car assets. Rizhao's investment environment, support policies and existing factories have the basis for cooperation. In May 2017, the two sides basically confirmed their cooperation intention.

In September 2017, the two parties jointly funded the establishment of Rizhao Zhongxing Automobile Co., Ltd. (hereinafter referred to as the joint venture company). In the same year, Hebei Zhongxing established Hebei Zhongxing Automobile Rizhao Branch (hereinafter referred to as Rizhao Branch) in Rizhao. The joint venture company is located at No. 6, Heze North Road, Donggang District, Rizhao City, Shandong Province. It is a large-scale joint venture integrating automobile R & D and sales, automobile manufacturing, parts R & D, procurement, manufacturing, sales and technical services. The registered capital of the company is 1.5 billion yuan only, which is jointly funded by Hebei Zhongxing Automobile Manufacturing Co., Ltd. and Rizhao High-tech Development Group Co., Ltd. The company covers an area of about 552 mu, with a construction area of about 134000 square meters and a production capacity of 100000 vehicles per year. With an advanced automobile test center, the automation rate of the four major process lines of vehicle manufacturing has reached 70%, and the process equipment has reached the domestic advanced level. In August 2019, it passed the qualification examination of "1", "5", "6" and "7" of the Ministry of industry and information technology of the people's Republic of China. It has the production qualification of traditional fuel vehicles and new energy vehicles for commercial vehicles, passenger vehicles and special purpose vehicles, The first batch of the whole vehicle was offline in December of the same year.

1. Four workshops

Rizhao Zhongxing Automobile Co., Ltd. is guided by the national automobile industry 4.0 technology, and is committed to building intelligent punching, welding, coating, and general four process plants.

① Stamping workshop

The stamping workshop has a construction area of about 15000 square meters and is divided into six areas: operation area, material preparation area, maintenance area, mold repair area, mold storage and raw material storage.

The stamping equipment adopts a 2000-ton 5-sequence single-action sheet automatic stamping production line. It has excellent deep drawing performance, perfect forming ability and stamping process curve.

The main equipment is as follows:

Stamping line: 5 hydraulic presses, 7 FANUC robots, waste conveying line, oiler

Auxiliary line: 2 sets of 50-ton crane, mold cleaning machine and sheet turning machine

Automatic stamping production line

② Welding workshop

Welding workshop construction area of 25500 square meters. It is mainly composed of small parts welding, sub-assembly welding, body assembly welding and body adjustment line. Workshop planning layout of 1 series, 3 series, 7 series of three platform product production line.

The floor line and the main welding line are welded by robots, and the welding spot accuracy can be controlled within 0.05mm, which ensures the welding spot strength and welding consistency. The three-coordinate measuring equipment ensures the accuracy of the tooling and the accuracy of the body.

The adjustment line mainly completes the assembly and clearance adjustment of the five doors and one cover, fenders and cargo boxes of the body, as well as the grinding and inspection of the outer covering parts such as side walls and doors.

Main equipment

Main welding line: 26 ABB robots and 492 spot welding machines

Auxiliary equipment: 1 Italian COORD3 double cantilever coordinate 1 method such as portable coordinate 1 American GE ultrasonic testing equipment 1 set of material tensile and crystal phase testing equipment

Adjusting line: 3 sets of wrapping machine, 1 plate chain skid body automatic conveying line

③ Painting workshop

The painting workshop has a construction area of 31000 square meters and is designed and built according to the standard of grade 100000 clean room. The workshop maintains constant temperature and humidity. The workshop is divided into high clean area and clean area.

The electrophoresis line uses the internationally advanced cathodic electrophoresis paint with high swimming penetration and high corrosion resistance to ensure that the inner cavity of the car body also has excellent corrosion resistance, salt spray resistance exceeds 1000 hours, and it will not rust after 10 years of normal use.

The topcoat adopts the world's advanced B1B2 spraying process, and adopts the water-based color paint and solvent-based varnish of Nippon Company, an internationally renowned brand. The adhesion, impact resistance, acid and alkali resistance and aging resistance of the paint film have reached the leading level in the industry.

Main equipment of painting workshop

Pretreatment electrophoresis line: process tank body and chamber body, conveying system, drying system, rectifier power supply, ultrafiltration system, anode system and pure water system

Glue coating line: conveying system, GARCO glue delivery system, anti-stone coating spraying system, skirt glue spraying system, drying room

Spraying line: 22 FANUC robots, B1B2 spraying line, GARCO paint transfer system, furnace temperature tracking detection

Inspection line: finishing room, cargo compartment treasure spraying system, internal cavity anti-corrosion wax spraying system, paint detection equipment

Spraying robot

spraying robot

④ General assembly workshop

The main workshop of the assembly workshop covers an area of 30600 square meters. It is divided into four functional areas: production assembly, distribution, functional testing and maintenance, and the main line production beat is 3 minutes. It can realize the assembly of various models such as pickup truck, car, SUV and urban logistics vehicle.

Main equipment

Interior line: skateboard conveyor line, glass gluing robot, power-assisted manipulator, marking machine

Chassis line: AGV combined truck, tire tightening machine, tire manipulator, fuel tank manipulator

Car line: air-tight meter, vacuum filling machine, seat manipulator and off-line detector

Detection line: non-contact laser four-wheel positioning, automatic light detector, four-wheel drum test bench, rain test line, special road test track

2. Test center

At present, the test center includes eight laboratories: vehicle performance emission laboratory, engine performance laboratory, vehicle vibration laboratory, mechanics laboratory, salt spray laboratory, materials laboratory, electrical laboratory and battery laboratory, three comprehensive vibration test benches, KC test bench and other test benches, and staff office area. Rizhao Zhongxing Vehicle Test Center can meet the requirements of traditional automobile main parts testing, vehicle performance testing, electrical testing, etc., while carrying out new energy vehicle related tests.