After checking the air compressor, it was found that due to the long-term humidity in a closed environment, the surrounding heat dissipation conditions were not good, and the metal parts of the pneumatic automatic switch were corroded. The main contact part was found to have been corroded and deformed completely. Flexible function. Exclude the dirt of the parts and rust-proof treatment, replace the top spring of similar specifications, re-adjust the system pressure, the air pressure automatic switch resumes normal operation, and the frequent failure of the air compressor start is solved.
All fastening screws are mounted on the underside of the mold base. Each component is also permanently numbered on the non-working surface for management. It is best to process all the holes when manufacturing. Do not produce one product once, otherwise it will cause a large accumulation or positioning error. Holes that are not covered during production are filled with countersunk screws or plastic pellets. The construction of the on-site bridge has reduced the workload and ensured the assembly quality of the bridge.
The management of the combined appearance is a key link. The warehousing of the appearance must be managed by a special person and strictly controlled. It is necessary to formulate sound institutional supervision for the collection and entry of parts and components. When the metal pattern is not in use, pay attention to rust prevention and maintenance. Care should be taken when assembling and disassembling the pattern, especially the corners and corners of the screw holes and the pattern, which are most likely to be damaged, so be careful to avoid collision. Patterns that are not produced online must be returned to the warehouse. According to the production operation plan, the patterns must be combined in advance to be sent to the production site. For the metal pattern, a simple mounting gantry can be made to work to reduce labor intensity and speed up installation.
Heat Treated Steel Bar And Tube
HEAT TREATED STEEL BAR AND TUBE
Heat treated steel bar is produced by heating and cooling in different temperature based on the steel grades to improve the steel bar mechanical properties or machinability for various industrial applications. Heat treated steel bar includes annealed steel bars, Normalized Steel Bar, quenched and temper qt steel bar.
Annealed Steel Bar has better ductility and lower hardness, which can be easier to be machined. The annealing processing is usually widely used for steel grade with higher carbon content above 0.5%. However, some low carbon steel also requires to do annealing for special usage such as 20CrMnTi gear steel. For some special material such as 20CrMnTi gear steel and GCr15 such bearing steel, spheroidizing annealing is often required.
Normalized steel bar sometime is also one kind of annealing processing. It mainly changes the grain to remove the impurities in steel and improves the strength and hardness. For some hot rolled steel bars, to keep the basic mechanical properties, normalizing is often used.
Quenching and Tempering, abbreviated as Q&T is a king of processing that strengthen or harden steel bars by heating the materials and then cooling in water, oil or other liquid medium, that rapidly the change from austenite to perlite to get the proper properties for various usage. The quenched & tempered steel bar materials are usually with carbon from 0.30% - 0.60%, it is widely used as merchant bars in components of various machines.
Our advantages on producing heat treated steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of Cold Drawn Steel Bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
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