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
Heat Treated Steel Bar And Tube Astm A193,Round Steel Tubing,Heat Treated Steel Tube,Heat Treated Steel Bar And Tube SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.lerenspecialsteel.com
The emergence of food packaging bags has solved the problem of food storage and preservation in people's lives. Today we mainly discuss the octagonal sealing bags , so what improvements are there in the octagonal sealing bags compared to the traditional food packaging bags?
1. Promote food competition and increase food sales
2. Protecting food and extending the shelf life of food
During the whole circulation process, foods must be handled, handled, transported and stored, which may cause damage to the appearance quality of food. After the food is packaged inside and outside, the food can be well protected from damage. The quality of the food changes and deteriorates throughout the circulation. The food itself has certain nutrients and moisture, which is the basic condition for the production and reproduction of bacteria, mildew, yeast, etc. When the temperature of food preservation is suitable for their reproduction, the food is spoiled and deteriorated. If the food is aseptically packaged or packaged for high temperature sterilization, refrigeration, etc., it will prevent food spoilage and prolong the shelf life of the food.
At the same time, the food itself has a certain amount of water, and when the content of the water changes, it will cause changes or deterioration of the flavor of the food. If the corresponding moisture-proof packaging technology is adopted, the above phenomenon can be prevented, and the shelf life of the food is effectively extended. In addition, when the food is in circulation, when it is directly exposed to sunlight and light, and at high temperatures, it is easy to cause oxidation, discoloration, odor, etc. of the food, such as the corresponding vacuum packaging, inflatable packaging and other technologies and corresponding packaging. Material. It can also effectively extend the shelf life of packaged foods.
3, packaged food is convenient for circulation
Some packages are containers for food circulation. Such as bottled wine, beverages, canned cans, field-packed milk powder, etc., these packaging bottles, cans and bags are not only packaging containers, but also the transfer and sale of food. It brings great convenience to food circulation.
4. Increase the variety of convenient foods
Convenient for consumers, some convenience foods, with local flavor, it can only be circulated after being packaged. It enables local famous foods to communicate and increase people's daily food types.
5, play a better marketing effect, the first shot of the brand war
Food packaging bags are an important basis for consumers to build a first impression of food. A good food packaging bag can attract consumers' attention and is a good helper for marketers. The octagonal sealing bags are favored by the majority of merchants and consumers with the advantages of three-dimensional full-scale display of goods.