Tire retreading casting molding method

Abstract

The invention discloses a method for casting molding of a retreaded tire. The method is used for batch production of the casting molding of blade casting moulds of CPP adjustable pitch propellers. The method is characterized by comprising the steps of regulating a sand box, casting a pressure face of the propeller, casting a suction surface of the propeller, manufacturing a propeller back tire mould and a propeller face tire mould, respectively pounding moulds to manufacture the required sand moulds of the suction surface and the pressure surface, combining and assembling the moulds after shaping, cleaning and painting the moulds, then placing a casting head, welding, fixing, and baking and pouring preparation. The whole process can be completed by only a pitch gauge, a section template and a longitudinal template, which replaces working by a large wooden pattern, simplifies the processes, improves the work efficiency, reduces the cost and ensures the quality, thus the method is worthy to be popularized in the industry.

Description

Technical field [0001] The invention relates to a casting method, in particular to the casting of CPP controllable pitch propeller blades suitable for mass production. Background technique [0002] At present, the traditional CPP controllable pitch propeller blade modeling method is as follows: first make a wooden model of the CPP controllable pitch propeller blade, and then fix the wooden model on the shaft on a square sand box, and fill the bottom of the blade with sand and pound it. Trim the edge to eat sand, place the positioning box cone, and blow CO 2 Harden, then brush paint, sprinkle parting agent, place the box net, pound the box sand and harden, and mark the box number on the surface of the box. Unpack the wooden mold, make the runner, repair the shape, brush the paint, close the box and tighten after verification, pound the box seam, place the sprue cup and the riser sand box for drying and pouring, and then complete the modeling. It can be seen from the above operati...

AI Technical Summary

Problems solved by technology

It can be seen from the above operations that this modeling method is time-consuming, laborious, costly and expensive due to the long period and high cost of making wooden molds, especially the large-scale blade wooden molds are deformed, and they are easy to shift when pounding the box, resulting in casting size deviations. Casting quality is not guaranteed

Images