Electron beam welding of bimetallic exhaust valves

Abstract : Compared with Nimonic80A super alloy exhaust valve, austenitic stainless steel and Nimonic80A bimetal exhaust valve not only have the same excellent thermal strength and hot corrosion resistance, but also low cost. The electron beam welding method of bimetallic e.......

Research on Feature Modeling Technology for CAD/CAPP Integration (2)

1.2 Feature Modeling Method Feature modeling is based on the feature of the feature library or an instance of user-defined features as the basic unit to establish a product feature model to complete the product design. The basic method of feature modeling is as follows.

(1) Using t.......

UG uses basic module introduction (2)

UG/AssemblyModeling (UG Assembly Modeling)

UG assembly modeling has the following features: providing parallel top-down and bottom-up product development methods; part data in the assembly model is a link image of the part itself, ensuring that the assembly model .......

Application of KBE technology in UG (2)

(3) Acquisition of knowledge – the mechanism of knowledge reproduction The KBE system has a “self-generated” knowledge reproduction mechanism. This is the main difference between it and the traditional expert system. The traditional expert system relies on knowledge engin.......

Automobile engine crankshaft damper (figure)

The crankshaft of an automobile engine is a very important component, and its manufacturing process is complicated and the quality is high. When the engine is operating, the vibration of the crankshaft is mainly the vibration in the torsional direction, and the bending direction may also ge.......