Thin stainless steel strips, they are also known as thin stainless steel strips foils and hand-tear strips stainless steel, which shows advanced technology.
If you are the beginner of this area, you will be an expert through this article.
Let’s keep reading.
What Are Thin Stainless Steel Strips?
Ultra-thin stainless steel strips are the high-end products in the field of stainless steel strips.
At present market, there are many 0.05mm thickness soft temper thin stainless steel strips.
Different from conventional stainless steel strips, super precision thin stainless steel strips refer to a special ultra-thin cold-rolled stainless steel strips whose thickness is generally between 0.05 mm and 0.5 mm, and it is called stainless steel foil below 0.05 mm.
Hand-tear strip is also called precision stainless steel foils, which represents the advanced technology of TISCO.
TISCO capability of stainless steel strip foil thickness is 0.02mm.
How To Make Thin Stainless Steel Strips?
1. Raw Materials Preparation
The raw materials of mother coils are purchased from well-known manufacturers such as BAOWU, TISCO, POSCO and JISCO, and every batch of goods is said to be genuine.
Each batch of goods has a product quality certificate issued by the origin manufacturer.
Our company will also conduct full inspections on the raw materials sent to the factory, and select raw materials for sampling and use for spectral testing.
The spectral testing can roughly detect the ingredients contained in the raw materials. We will check with the manufacturer’s quality certificate. Make a comparison and confirm that the materials are correct.
Checking details include products thickness tolerance, width of coil, outside packaging, label marks, inside surface finish, chemical components, etc.
We will also save some raw materials and finished products of precision stainless steel strips, and send them to qualified testing institutions on a regular basis, so that the testing institutions can use professional instruments to test our precision stainless steel strips and raw materials.
For full quality control, ensuring that our products are in compliance in every standard of the national technical specifications.
2. Rewinding Process
It is very important for precision thin stainless steel strips manufacturing production step.
Even choosing high quality mother coils raw materials, these materials may have customized parts, which can be the result of production, transportation and other issues.
By using the rewinding equipment, we can inspect the coils materials in search for any defect that may compromise the quality of the finished end product, which allows us to take any necessary actions to guarantee the prime quality of steel strips.
3. Cold Rolling
During this step of the precision thin stainless steel strips manufacturing process, a cold rolling mill is used to achieve the final desired thickness of the steel strip, a machine that also ensures the quality of the good surface finish, the flatness of the strip and the variation of the thickness to match with the international standards.
We have to mention that the twenty-high rolling mill equipment.
Twenty-high rolling mill, including stand, roll system, roll box, pressing device and driving device.
Its characteristic is that the frame is a rectangular integral frame archway formed by high-quality steel casting.
Between the upper support rollers A and B and between C and D, there is a crown control device including hydraulic cylinders, racks and gears.
The adopted roll system can produce the cold-rolled strip stainless steel varieties required by the market.
This new type of 20-high rolling mill has reasonable structure, high rigidity of the frame, atnd good shape control effect.
The thickness of the produced stainless steel strip can be up to 0.001mm. The rectangular saddle and the housing are easy to process, the matching accuracy is high, and the lower roll box is easy to adjust and make the rolling line maintain a standard height.
After cold rolling process, we can achieve the super thin stainless steel strips products with 0.02mm thickness.
4. Bright Annealing
In this step, the metallurgical process is performed on the whole stainless steel strip body.
Through the heat treatment, the microstructure of the strip material is altered in order to provide the desired mechanical properties while on usage.
The thin stainless steel strip is processed for bright annealing treatment. The strip can be fast cooled by the the continuous annealing line.
The traveling speed of the thin stainless steel strip on the line is around 60m~80m/min.
Cleaning the residual oil on the surface of the thin stainless steel strips due to the stains during the rolling process.
The principle is to use the chemical reaction (saponification reaction) between the alkaline agent and the grease on the surface of the steel strips to remove the grease.
In order to wash them off, hot alkaline rinsing is performed.
The speed of the whole cleaning unit line is about 60meters/min, which can handle 0.02mm-1.0mm thickness stainless steel strips.
6. Tension Straightening Process
When thin stainless steel strip is rolled on a twenty-high rolling mill with a thickness of 0.02mm-0.8mm, it is a difficult-to-deform metal strip condition.
Under the condition of complete softening and large tension leveling, the use of stretch bending straightening is the only method that can eliminate the stress of steel stainless strip.
The tension leveling is performed by means of a skin pass mill, a machine that, in addition to improve the mechanical properties, which helps to improve the final brightness of the steel strip. That way, the desired features of the final strip product are guaranteed.
After straightening process, the stress distribution in the entire stainless steel strip is more uniform and the plate shape is more straight.
The excellence control and management to production process assures the straightness of each stainless steel strip with variety hardness temper.
7. Slitting Process
For super thin stainless steel strips slitting process, our staff will use the precision and small machines to cut the narrow thin strip coils. Thickness of thin strip foils is from 0.02mm to 0.08mm.
Our workers will make adjustments between finished strip coils and cutting tools when they are preparing to slit in order to minimize the burr of strips edge as much as possible.
The precision thin stainless steel strips manufacturing process ends with the slitting, where slitting knives of the highest precision are used to obtain the final width and burr level of the cold rolled precision strip stainless steel.
Our company bears no compromise on stainless steel strips quality.
We use the prime quality stainless steel coils materials along with the advanced equipment and precision production processes.
We revise the strip orders and take thorough insights before forwarding the order to the final production line. This makes sure the every production is carried out in the most effective manner with zero errors.
Inspecting the thin stainless steel strips after production carefully.
After all strip foils products are finished, the quality control department deal with the following inspections, such as metallographic analysis, mechanical performance testing, straightness testing, plate shape, surface finish, thickness and width tolerances inspection, etc.
9. Packaging And Stock
As a word, exquisite sea packaging capability reflects every stainless steel strips supplier‘s service. It also greatly influences the customer’s next order plans.
Wooden case box and wooden pallet are the two main packaging materials.
Eye to eye or eye to wall types of packaging strips will be adopted before loading container.
What’s more, the clear labels and marks are tagged on the outside of these sea standard packages for easy identification of these strips stainless steel specifications and other important information.
After all packaging inspection process, our expert staff will load the stainless steel strips to our warehouse. Before data warehousing is also be done during this step to make sure all strips products are clear.
What Are Thin Stainless Steel Strips Applications?
The technical indicators of precision thin stainless steel strips are extremely demanding, which also makes the strip excellent in performance indicators, such as high strength, corrosion resistance, oxidation resistance, wear resistance, heat resistance and anti-light resistance.
The appearance is exquisite and easy to process, so it has become an important part of enhancing the style of the related metal product.
For example, in 2015, China-made precision thin stainless steel strips materials passed Apple’s certification and became the logo material for the manufacture of iPhone and iPad.
Of course, the use of precision thin stainless steel strip is not limited to the production of Apple phones’ LOGO.
For example, it is used in engine combustion chamber accessories with high material requirements, and lithium-ion batteries.
The former is resistant to high temperature, the latter requires corrosion resistance, and these positions have extremely high requirements on the thickness and strength of the material.
And we believe that super thin stainless steel strips application will be extended rapidly.
Thin Stainless Steel Strips Manufacturers: Which Is Right For You?
In the current stainless steel strips market, the quality is already a lot of manufacturers to abandon, and how to save production costs, to win the price of every tender from customers has become their only standard.
So if you are in thin stainless steel strips area, you are not only need the supplier, but also a long term partner.
HZW has several years of production thin stainless steel strips experience which make it an ideal choice for you.
If you are looking for the quality thin stainless steel strips suppliers from China that could help you carry out all the respective processes involved in industry from the stainless steel raw materials to strips mass production, HZW is here for you.
Our expert team is well versed in several industry fields, making sure there is no error in your every strip stainless steel order.
In case you have any question, feel free to contact HZW team. Here HZW will help you in all your solutions of thin stainless steel strips.