On October 10, 2009, Chongqing celebrated the 60th anniversary of the founding of the People's Republic of China. Chongqing Cummins Engine Co., Ltd. is pleased to report that it has successively been elected as "Chongqing City is a Meritorious Enterprise for National Construction and Founding Company" and "60 years of an enterprise that affects Chongqing Economy 60". The two gold-rich honors fully affirmed Chongqing Cummins’ great achievements and its outstanding contribution to the local economy and the development of the industry. Chongqing City celebrated the 60th anniversary of the founding of New China as a recognition activity for the meritorious service companies and star enterprises of the State Construction Foundation. It is under the support and guidance of the General Office of Chongqing Municipality, the Economic Information Commission and the State-owned Assets Supervision and Administration Commission of the People's Republic of China. It was led by the Federation of Industrial Economics and jointly selected with relevant departments, industry associations, and well-known social experts and scholars. Chongqing Cummins Engine Co., Ltd. together with Chongqing Chang'an Industry (Group) Co., Ltd., Chongqing Iron and Steel (Group) Co., Ltd. and other well-known enterprises were awarded the title of "Chongqing City is a national meritorious enterprise meritorious enterprise." Another heavyweight selection - "60 years of business affecting Chongqing economy 60 enterprises" and "60 years of Chongqing economy affecting 60 entrepreneurs" led by the Chongqing Municipal Party Committee Propaganda Department, Chongqing TV Station, Chongqing Morning Post, Hualong Network, Hongyan Spring and Autumn Magazine co-sponsored. The selection process was nominated by an expert jury to nominate 100 companies and 100 people to be elected to the list. At the same time, it was announced to the public by the public to nominate the enterprises and entrepreneurs that affected the Chongqing economy in their minds, and then produced 100 candidate companies and entrepreneurs. The final list of “60 years of 60 enterprises and 60 people affected by Chongqing economy†was jointly voted by the judges and the citizens. Chongqing Cummins won the full recognition of Chongqing citizens and experts and scholars, and was elected as “60-year-affecting Chongqing economy 60 enterprisesâ€. At the same time, He Yong, chairman of Chongqing Cummins, listed “60 years of entrepreneurship affecting Chongqing economyâ€. As one of the leading enterprises in Chongqing's industrial sector, Chongqing Cummins has made outstanding contributions to Chongqing's regional economic progress, industrial upgrading, technological innovation and sustainable development in the long-term development process. With excellent product platform and technical strength, the performance of Chongqing Cummins has been continuously rising. In 2008, it achieved sales revenue of 2.2 billion yuan. Chongqing Cummins is also a pioneer in technological advancement. It has newly introduced the electronically controlled large-horsepower QSK engine platform to achieve localized production, filling the gap in the development of China's high-powered engine electric control. In addition to its economic and technological breakthroughs, Chongqing Cummins has also been brave enough to undertake corporate social responsibilities in order to realize actions to repay the society and improve the community in terms of education support, helping the crisis, and protecting the environment. Chongqing Cummins Engine Co., Ltd. is the starting point for Cummins's localized production in China. In 1981, as one of the key projects in the national “6th Five-Year Plan†engine sector, CNHTC and Cummins formally signed a technology transfer agreement, starting in Chongqing Engine Factory (Chongqing). Cummins' predecessor) licensed the production of Cummins high-power diesel engines. In the mid-1990s, the cooperation between the two parties continued to deepen. In 1995, Chongqing Engine Factory officially became a Sino-foreign partner's peer-to-peer joint venture – Chongqing Cummins Engine Co., Ltd. Joint venture For more than a decade, the Chongqing Cummins Joint Venture has been one of the main driving forces for Cummins's rapid growth in China. The current product line includes heavy and high horsepower with displacements of 11 liters, 14 liters, 19 liters, 38 litres and 50 litres. Engines and generator sets, the engine power range covers 175 to 2000 horsepower. On September 15, 2009, the fully electronically controlled QSK19 commercial engine was off the assembly line at Chongqing Cummins, marking that Chongqing Cummins completed the leap from machinery to EFI, indicating that Chongqing Cummins has taken the lead in the domestic high-horsepower EFI engine technology field. . Sheet Metal Fabrication Service Processing steps For Sheet Metal Parts - Custom Sheet Metal Fabrication Service Company
10. Assembly. The so-called assembly is to group multiple parts or components together in a certain way to make them into a complete material. One thing that needs to be paid attention to is the protection of the materials, and no scratches. Assembly is the last step in the completion of a material. If the material cannot be used due to scratches, it needs to be reworked and reworked, which will waste a lot of processing man-hours and increase The cost of the item. So pay special attention to the protection of the item.
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1. Design and draw the part drawing of its sheet metal parts, also known as three views. Its function is to express the structure of its sheet metal parts by means of drawings.
2. Draw an unfolded drawing. That is, unfold a part with a complicated structure into a flat piece.
3. Unloading. There are many ways to unload, mainly the following methods:
a. Shearing machine cuts the material. It uses the shearing machine to cut out the length and width dimensions of the expanded drawing. If there are punching and corner cutting, then the punching machine is combined with the die to punch and corner to form.
b. Punch blanking. It is the use of a punch to punch the structure of the flat part after the parts are unfolded on the plate in one or more steps. Its advantages are short labor hours, high efficiency, and can reduce processing costs. It is often used in mass production.
c. NC CNC blanking. When NC blanking, you must first write a Cnc Machining program. That is, use the programming software to write the drawn expanded diagram into a program that can be recognized by the NC CNC machining machine. Let it follow these programs step by step on a piece of iron plate On the top,punch out the structural shape of its flat parts.
d. Laser cutting is the use of laser cutting to cut the structure and shape of the flat piece on an iron plate.
4. Flanging and tapping. Flanging is also called hole extraction, which is to draw a slightly larger hole on a smaller base hole, and then tap the hole. This can increase its strength and avoid slippage. Generally used for sheet metal processing with relatively thin plate thickness. When the plate thickness is large, such as the plate thickness of 2.0, 2.5, etc., we can tap directly without flanging.
5. Punch processing. Generally, punch processing includes punching and cutting corners, punching blanking, punching convex hull, punching and tearing, punching and other processing methods to achieve processing purposes. Its processing requires corresponding molds to complete the operation. There are convex molds for punching convex hulls, and tearing forming molds for punching and tearing.
6. Pressure riveting. As far as our factory is concerned, pressure riveting studs, pressure riveting nuts, pressure riveting screws, etc. are often used. The pressure riveting method is generally completed by a punch or hydraulic pressure riveting machine. Riveted to the sheet metal part.
7. Bending. Bending is to fold 2D flat parts into 3D parts. Its processing requires a folding bed and corresponding bending molds to complete the operation. It also has a certain bending sequence, and the principle is to make the next cut The first fold that does not cause interference will produce the interference back fold.
8. Welding. Welding is the group welding of multiple parts together to achieve the purpose of processing or the edge welding of a single part to increase its strength. The processing parties generally include the following: CO2 gas shielded welding, argon arc welding, Spot welding, robot welding, etc. The selection of these welding methods is based on actual requirements and materials. Generally speaking, CO2 gas shielded welding is used for iron plate welding; argon arc welding is used for aluminum plate welding; robot welding is mainly in-material It is used when the parts are large and the welding seam is long. Such as cabinet welding, robot welding can be used, which can save a lot of tasks and improve work efficiency and welding quality.
9. Surface treatment. Surface treatment generally includes phosphating film, electroplating colorful zinc, chromate, baking varnish, oxidation, etc. Phosphating film is generally used for cold-rolled plates and electrolytic plates, and its function is mainly to plate on the surface of the material. A protective film is applied to prevent oxidation; the second is to enhance the adhesion of its baking paint. Electroplated multicolored zinc is generally treated with cold-rolled plate surface treatment; chromate and oxidation are generally used for surface treatment of aluminum plates and aluminum profiles; its specific surface The choice of treatment method is based on the customer's requirements.
