Impeller hot pressing manufacturing method

Abstract

The invention relates to an impeller hot pressing manufacturing method which includes the following steps: step 1, cleaning up impeller dies and coating release agent on the dies; step 2, installing the lower die, a charging barrel and a mandril and aligning the inserts; step 3, weighing the materials according to consumption quota and pouring the materials into the lower die; step 4, installing the upper die and putting the dies onto a press to be closed; step 5, exhausting the air of the dies; step 6, gradually pressing until reaching the prepressing pressure; step 7, after prepressing, heating the dies; step 8, after heating, putting the dies onto the press to be extruded until reaching the dwell pressure; step 9, dwelling under pressure and solidifying, and after that taking off the dies; step 10, demoulding; and step 11, cleaning up the dies and furnishing and cleaning up the impeller. Repeated experiments show that the method has the characteristics of high efficiency, low cost and reasonable technical condition and the piece manufactured through the method is of high quality.

Description

technical field

[0001] The invention relates to a hot-press manufacturing method, in particular to a hot-press manufacturing method for fan impellers. Background technique

[0002] Thermocompression forming belongs to a process method in the field of manufacturing. However, it has the problems of long research and development period, low efficiency, high cost, non-universal manufacturing specifications, difficult to determine process conditions, and poor controllability of product quality, which seriously restrict it. development and application.

[0003] In hot pressing, the material undergoes a series of physical, chemical changes and chemical-physical coupling changes under the action of heat and pressure. On the one hand, they determine the performance of the final product and reflect the rationality of the process parameters; Affected by the characteristics of raw materials and the shape of the workpiece. The typical process system of material thermoforming includes t...