The mark pile mold is a tool for forming the cement mark pile. The cement products produced by the mark pile mold can meet the needs of the project, which brings great convenience to the current project, so that the overall level of the industry has been greatly improved. The quality of the mark pile mold also depends on the quality of the mold. The poor mold will not only affect the production of the highway boundary pile, but also affect the normal use and safety of the highway boundary pile, so we should pay special attention to it.
The service life of the mark pile mould mainly lies in the later maintenance. According to our long-term experience, we should pay attention to:
1. Improper material selection for main working parts. The material performance is not good and wear-resistant; the die steel is not refined and has a large number of smelting defects; the process of changing the convex and concave die into forging blank is not perfect, and there are hidden dangers of heat treatment.
2. Structural design, unreasonable die structure. There is no reinforcement device for the slender punch, the discharging port is not smooth, the discharging force is too large to make the punch bear alternating load.
3. The imperfection of the die making process is mainly manifested in the poor internal quality of the convex and concave die forging blank, the problem of heat treatment and process, resulting in the incomplete quenching of the convex and concave die, the uneven soft spots and hardness. Sometimes there are microcracks, even cracks, grinding and polishing are not in place, and the surface roughness value is too large.