On September 9th, 2010, Changzhou CSR General Electric Diesel Engine Co., Ltd., a joint venture between Qishuyan Locomotive Co., Ltd., a subsidiary of China South Locomotive, and General Electric (China) Co., Ltd., was founded and laid the foundation for the project's official settlement on the Qishuyan Economic Development Zone in Changzhou. Transportation Industry Park.
The diesel joint venture project covers an area of ​​100 mu and is approximately 66,000 square meters. The total investment is expected to be approximately RMB 650 million. It is mainly engaged in the manufacture, assembly, testing, sales, and after-sales repairs of diesel locomotives and related parts and components. The project will be invested and constructed in two phases. The first phase will mainly produce the Evo16 diesel supercharger and power unit. The total investment in the first phase will be approximately RMB 204 million, covering an area of ​​30 mu and approximately 20,000 square meters. After the joint venture is officially put into operation, it can achieve annual production capacity of 250 sets of EVO16 diesel engine power units and superchargers for assembly and overhaul. It is expected that the annual sales income for the first phase will be 500 million yuan. The first phase of the project is scheduled to be put into production by the end of March 2011. Nearly one hundred related jobs can be created at that time. After the official start of the second phase, it is estimated that annual sales will be about 1.5 billion yuan.
Tongue And Groove Face Flanges
The Tongue and Groove faces of this flanges must be matched. One flange face has a raised ring (Tongue) machined onto the flange face while the mating flange has a matching depression (Groove) machined into it's face.
Tongue-and-groove facings are standardized in both large and small types. They differ from male-and-female in that the inside diameters of the tongue-and-groove do not extend into the flange base, thus retaining the gasket on its inner and outer diameter. These are commonly found on pump covers and Valve Bonnets.
Tongue-and-groove joints also have an advantage in that they are self-aligning and act as a reservoir for the adhesive. The scarf joint keeps the axis of loading in line with the joint and does not require a major machining operation.
General flange faces such as the RTJ, TandG and the FandM shall never be bolted together. The reason for this is that the contact surfaces do not match and there is no gasket that has one type on one side and another type on the other side.
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