Solidification of machine tool Casting Parts

- Feb 18, 2019-

Hengtong Precision

The solidification method of the machine tool Casting Parts and the layer-by-layer solidification method show that the solid and liquid phases of the alloy are clearly separated from each other by a boundary during the solidification process. This solidification method is called layer-by-layer solidification. Common alloys such as gray cast iron, low-carbon steel, industrial pure copper, industrial pure aluminum, eutectic aluminum-silicon alloys, and some brasses all belong to layer-by-layer solidification alloys. 2. Paste solidification method The alloy is first pasted and then solidified during the solidification process. This solidification method is called pasty solidification. Ductile iron, high-carbon steel, tin bronze, and some brass are all paste-solidified alloys. 3. Intermediate Coagulation The solidification of most alloys is between layer-by-layer solidification and pasty solidification, which is called intermediate solidification. Medium-carbon steel, high-manganese steel, and white cast iron have intermediate solidification methods. Factors Affecting the Solidification Mode of Machine Tool Casting Parts 1. Influence of Solidification Temperature Range of the Alloy The alloy's liquidus and solid phases intersect together, or the spacing is small, the metal tends to solidify layer by layer; if the distance between the two phase lines is very large Large, it tends to paste solidification; if the distance between the two phase lines is small, it tends to intermediate solidification. 2, the influence of the temperature gradient of the machine tool Casting Parts Increasing the temperature gradient can make the solidification method of the alloy solidify and transform layer by layer; otherwise, the solidification method of the machine tool Casting Parts transforms to the paste solidification.

How to measure machine tool Casting Parts more accurately

The machine tool Casting Parts can generally be measured at room temperature, but the temperature of the workpiece and the measuring tool must be the same. Otherwise, due to the thermal expansion and contraction characteristics of the metal material, the measurement result is inaccurate. The influence of temperature on the precision of the measuring tool is also great. The measuring instrument should not be placed in the sun or on the headstock. The difference lies in the structure of the platform. If the bearing capacity of the general platform is not large, the panel and the skirt can be made slightly thin. A point, this can save costs, but the aluminum profile inspection platform can not be measured in this way, although the platform bearing weight is not great, but the platform because of its special shape, because the gauge temperature increases, but also can not measure the correct size. Not to place precision measuring instruments near heat sources (such as electric furnaces, heat exchangers, etc.) to avoid distorting the gauges and losing accuracy.

The weight of the workpiece can't exceed the extra load of the scribe platform. Otherwise, the quality of the task will be reduced, and the structure that can damage the scribe platform will be deformed even if the scribe platform is deformed, making it impossible to use.