Professional Hss rolls manufacturer with 20 years of production experience. mainly produces all kinds of metallurgical rolls for various types of steel, bar, high-speed wire and strip hot and cold plate and strip rolling mills.WE can provide characteristic service and differentiated products according to the different conditions of rolling mill.
ARE YOU LOOKING FOR ROLLING MILL ROLLS? – CONTACT US TO GET BEST PLAN.
High-speed steel roll materials contain relatively high alloying elements such as vanadium, tungsten, chromium, molybdenum, and niobium. The main types of carbides in the roll structure are MC type and M2C type. The carbides have high hardness and good wear resistance. Compared with traditional ductile iron rolls and high nickel-chromium rolls, the steel passing capacity of a single groove (times) is high, which saves the time of changing rolls, improves the operating rate of the rolling mill, reduces roll consumption, reduces production costs, and improves the overall benefits of the factory. .
High-speed steel rolls have good thermal stability. At the rolling temperature, the roll surface has high hardness and good wear resistance.
Since the core of the centrifugally cast high-speed steel roll is made of alloy ductile iron material, the roll neck has high strength.
The high-speed steel roll has good hardenability, and the hardness almost does not drop from the surface of the roll body to the inside of the working layer, so that the roll has equally good wear resistance from the outside to the inside.
During the use of high-speed steel rolls, under good cooling conditions, a thin and dense oxide film is formed on the surface of the roll body. This uniform, thin and dense oxide film can exist for a long time without falling off, making the high-speed steel rolls durable. Grindability is improved.
The high-speed steel roll material has a large expansion coefficient and good thermal conductivity. During the rolling process, the roll wears slightly along with the rolling groove. At the same time, due to the expansion of the high-speed steel material itself, the pass shape continues to become smaller. Therefore, the high-speed steel roll is During the rolling process, the rolling groove changes little, and the consistency of the pass size is maintained for a long time. Especially when rolling bars or rebars, it is more conducive to controlling the negative tolerance of the rolled material.
High-strength high-speed steel roll
Recommended to be used in: Finishing rolling stand and Pre- finishing rolling stand
Slitting high-speed steel rolls
Recommended to be used in: Cutting rolling stand and Pre- Cutting rolling stand
High-speed steel rolls
Recommended to be used in: Finished rolling stand
The Hss rolls produced by our company are widely used in:
| chemical composition | C | Si | Mn | Cr | Ni |
| Proportion(%) | 1.5-2.2 | 0.3-1.0 | 0.4-1.2 | 3.0-8.0 | 0.0-1.5 |
| chemical composition | Mo | V | W | P | S |
| Proportion(%) | 2.0-8.0 | 2.0-9.0 | 0.0-8.0 | ≤0.03 | ≤0.03 |
Enterprises specializing in the production of high-performance mill rolls
Founded in 2007, LMM GROUP mainly produces all kinds of metallurgical rolls for various types of steel, bar, high-speed wire and strip hot and cold plate and strip rolling mills.
The company covers an area of 100,000 square meters, including two complete production lines for cast rolls and forged steel rolls, processing workshops, product research and development centers, testing centers, training centers and office buildings and other supporting facilities. The factory environment is very beautiful.
LMM have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, NLMK, MMK, etc. We do OEM for Concast and Danieli for a long time
Technical excellence in our core competencies – melting, casting, forging, heat treating and machining – allows us to provide a superior product and meet the most demanding requirements of our customers.
LMM high-speed steel rolls have higher steel passing per groove (times) due to their good wear resistance, which saves roll changing time, improves rolling mill operation rate, reduces roll consumption, and improve the overall efficiency of the factory.
Generally, the amount of steel passing in a single groove (times) is 3-5times than normal cast iron rolls.
How to find a trustworthy Adamite rolls manufacturer
If you want to find a trustworthy adamite rolls supplier with long-term cooperation, maybe you need to concern about as the following
The equipment plays an important role in the high-quality mill rolls. Types of equipment matters from the beginning to the finished products. Compared with alloy cast steel roll, adamite roll has a good abrasion resistance through a special heat treatment process, so for the products, the equipment ever much more important.
Different stages of production have to follow controlling parameters to ensure that the production department is working with the required efficiency. To get the quality mill roll, quality is absolutely necessary
A reliable manufacturer will focus on technological advancement for its long-lasting development. The advanced technology can guarantee the improvement of products. The best supplier not only can provide high-standard products but also is the steel solution provider. Before choosing the company you should ensure the manufacture has a professional team for advanced technology.
Delivery time often is the main factor to choose the supplier. Delivery on-time is also the basis of next time cooperation. Checking out the place of the company and the delivery term is essential. Price is also an important element for a best-value mill roll manufacturer.
Cast rolls technical Process:
Modeling → smelting → centrifugal casting → cleaning → preliminary heat treatment → rough machining → differential heat treatment → finishing → packaging and delivery.
Temperature controlled cooling + annealing treatment after casting:
the microstructure transformation is more sufficient and the stress state is more stable.
The composition of the working layer adopts multi-element micro alloying technology:
which takes into account wear resistance and accident resistance, and has better comprehensive performance.
The multi-layer composite technology: is adopted to effectively block the diffusion of high alloy content in the working layer to the core structure and ensure the strength and toughness of the core structure.
Differential heat treatment technology: is adopted to make the microstructure change fully and the stress distribution more stable and reasonable.
Forged steel roll technical Process:
Electric arc furnace smelting → LF \ VD refining → ingot casting → annealing → cleaning → electroslag remelting → annealing → forging → post forging heat treatment → rough machining → preliminary heat treatment → semi finishing → dual frequency quenching or differential temperature treatment → cryogenic treatment → tempering → finishing → packaging and delivery.
Double refining + electroslag remelting to ensure good metallurgical quality
Perfect heat treatment and cold treatment technology to ensure the depth and hardness uniformity of hardened layer
Our Client Say?
The trial data shows that the ∮370mm high-speed steel roll produced by LMMGROUP has far exceeded the single-groove assessment value of 1,500 tons in the “Roll Ordering Technical Agreement”, and the effect is good.
On September 10, 2015, in the rolling process of the steel rolling mill, the LMMGROUP high-speed steel bar rolling experiment was carried out on the first bar line C12 to four cuts, and C14 three cuts to K1, K2, K3, and K4. According to the trial situation, The average amount of steel passing through LMMGROUP rolling is about 50%-60% of the alloy rolling spoke. The processing difficulty of high-speed steel is low, and the processing cost is lower than that of the alloy rolling wheel. Our factory can achieve normal processing.
LMM GROUP have been supplied to world’s top steel manufacturer :
United Arab Emirates：Emirates Steel
Egypt:Ezz Steel
Russia:MMK，Mechel, NLMK
Luxembourg：RIVA Group，ArcelorMittal
Turkey: Tosyalı Holding，İçdaş，Erdemir Group
Spain: Liberty Steel Group，CELSA Steel Group
India: tata-steel，SAIL, SPL，Erdemir Group etc. We do OEM for Concast and Danieli for a long time
* Inquiry and consulting support.
* Planning layout and Design requires machinery
* Welcome visit our Factory.
* The production process and before leaving the factory, all performance indicators are strictly tested, and the professional QC team controls according to the process.
* Engineers available to service machinery overseas.
* IN-TIME delivery goods.
* The quality is tracked throughout the process, and the installation and use are guided throughout the process.
* Long-term technical support.
* Stick to the agreement, do not do anything that violates the agreement, stick to the spirit of the contract to the end.
We would be happy to help and advise if you have any questions or inquiries.
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