Surface strengthening treatment method of glass ware pressing die

Abstract

The invention discloses a surface strengthening treatment method of a glass ware pressing die, which adopts the oxyacetylene flame spray welding technology to spray and weld the self fluxing alloy powder on the surface of the die to form a coating, the self fluxing alloy powder is composed by the compositions that: C: less than or equal to 0.15%, B: 1.5%-3%, Si: 3%-4%, Cr: 8%-13%, Fe: less than or equal to 8%, and balance Ni. The method adopts the oxyacetylene flame spray welding technology, selects the self fluxing alloy powder to strength the surface of the pressing die, so the service life of the glass ware pressing die is improved by over 5 times than that of the original chroming pressing die.

Description

technical field [0001] The invention discloses a method for strengthening the surface of a metal mold, in particular to a method for strengthening the surface of a glass vessel pressing mold. Background technique [0002] The cause of glassware defects is not a single factor but a reflection of comprehensive factors, which can be roughly divided into 4 aspects: glass composition, mechanical action (including timing settings), forming process parameter setting and glass mold. Glass mold is one of the main factors for glass bottle defects. Glass bottle defects caused by glass molds and related factors account for more than 50% of glass bottle defects in the forming process. [0003] After the glassware pressing mold is processed and produced for a period of time, defects or residual tensile stress will often be formed on the surface of the mold. These surface defects or residual stress often cause the root cause of mold damage and reduce the service life of the mold. Further...

AI Technical Summary

Problems solved by technology

[0003]After the glassware pressing mold is processed and produced for a period of time, defects or residual tensile stress will often be formed on the surface of the mold, and the surface defects or residual stress often cause the mold to be damaged Root cause, and reduce the service life of the mold

Furthermore, thermal cracks and thermal erosion caused by molds after a short period of use are the most troublesome quality problems for mold manufacturers, which also lead to a sharp increase in maintenance costs and manufacturing costs.

Most of the processing processes, including electric discharge machining, wire cutting and surface nitriding treatment, will form a hardened white layer on the surface of the mold, which will cause the surface of the mold to catalyze and reduce the production life of the mold.

Therefore, how to solve the above-mentioned shortcomings of the surface hardness of the mold, and further strengthen the surface structure of the mold, so as to reduce the maintenance cost and extend the service life of the mold, is the key direction that the industry should strive to develop and break through.