High-speed steel roll

The high-speed steel rolls produced by our company are widely used in:

Finished stand (high-speed steel roll), pre-finished stand (high-speed steel roll), slitting stand (slicing high-speed steel roll), pre-slicing stand (slicing high-speed steel roll).

High-speed wire rod mill pre-finishing line. Hot rolling narrow strip mill finishing line.

Spring flat steel rolling mill finishing rolling stands and angle steel, channel steel and other small section steel rolling mills.

Product name:High alloy high speed steel rolls
Packing Details : Wooden box with fumigation or Wooden Fram
Delivery Details: 30~60 days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight
Customization:
Customized logo(Min. Order 1 piece)
Customized packaging(Min. Order 1 piece)
Graphic customization(Min. Order 1 piece)
Checking report: Material Report、Hardness Report、UT/MT Report、Dimensions checking report、Mechanical Property Test Report

Manufacture drawing	√
Process schedule with ETD date	√
QC checking of each process	√
Checking report	√

Photos &videos of each process	√
ISO 9001 certificate	√
Warranty Time	√
The third party Checking	√

High speed steel rolls Application

The high-speed steel rolls produced by our company are widely used in:

Finished stand (high-speed steel roll), pre-finished stand (high-speed steel roll), slitting stand (slicing high-speed steel roll), pre-slicing stand (slicing high-speed steel roll).

High-speed wire rod mill pre-finishing line. Hot rolling narrow strip mill finishing line.

Spring flat steel rolling mill finishing rolling stands and angle steel, channel steel and other small section steel rolling mills.

● High-speed bar pre-finishing stand, finished product stand, finished product pre-rolling stand, pre-slicing stand, slitting stand of bar rolling mill

● High-speed wire rod mill pre-finishing mill

● Hot rolling narrow and medium wide steel rolling mill finishing mill

● Finishing stand of spring flat steel mill and small section steel mills such as angle steel and channel steel

Advantages of high speed steel rolls:

Advantages in high-speed steel roll materials

The high-speed steel roll material contains high alloy elements such as vanadium, tungsten, chromium, molybdenum, niobium, etc. The types of carbides in the roll structure are mainly MC type and M2C type. Compared with ductile iron rolls and high-nickel-chromium rolls, the single-groove (time) steel passing is higher, which saves roll changing time, improves rolling mill operation rate, reduces roll consumption, reduces production costs, and improves the overall benefit of the factory.
The high-speed steel roll material has a large expansion coefficient and good thermal conductivity. While the roll wears a small amount of the groove during the rolling process, due to the expansion of the high-speed steel material itself, the hole shape continues to become smaller. Therefore, the high-speed steel roll is rolling. During the process, the change of the rolling groove is small, and the consistency of the pass size is maintained for a long time, especially when rolling bars or rebars, it is more conducive to control the negative tolerance of the rolling material.
Centrifugal casting high speed steel roll core is made of alloy ductile iron material, so the roll neck strength is high

The following table shows the types and microhardness of alloy carbides formed by different material rolls.

Roll material	Main Carbide Type		Carbide form	Carbide microhardness (HV)
high speed steel	MC	VC	granular	2800
		WC	granular	2400
		NbC	granular	3000
		TiC	granular	3200
	M₂C	Mo₂C / W₂C	stick / feather	2000
	M₆C	Fe₃ / W₃C	fishbone	1500-1800
high chromium cast iron	M₇C₃	Cr₇C₃	chrysanthemum	1200-1600
high chromium cast iron	M₂₃C₆	Cr₂₃C₆	granular（2次）	1200
High nickel chromium molybdenum cast iron	M₃C	Fe₃C	mesh	840-1100

Advantages of the metallographic structure of high-speed steel rolls

It can be seen from the metallographic photos that the metallographic structure of the high-speed steel roll is much better than other materials in terms of the shape, quantity, size and distribution of carbides, as well as the matrix structure and grain size.

Advantages in the use of high-speed steel rolls

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, so that the wear resistance of the high-speed steel roll is significantly improved.

Other main advantages of high-speed steel rolls

High-speed steel rolls have good thermal stability, and the roll surface has high hardness and good wear resistance at rolling temperature.
The high-speed steel roll has good hardenability, and the hardness from the surface of the roll body to the inside of the working layer hardly decreases, thus ensuring that the roll has the same good wear resistance from the outside to the inside.

High speed steel rolls Production Process

Product design→ Roll blank design→ Roll blank manufacturing→ Roll blank acceptance→ Annealing→ Rough turning→ Ultrasonic flaw detection→ High temperature quenching→ Low temperature tempering→ Ultrasonic flaw detection→ Finishing→ Ultrasonic flaw detection→ Roll body grinding→ Roll numbering→ Inspection→ Cleaning → Packing → Shipping → Warehousing → Inspection → Use and Maintenance → On-site Communication → Design Improvement.

As can be seen from the flow chart, roll manufacturing forms a closed-loop system from product design, production and manufacturing, use and maintenance, and improved design, and the quality of rolls is constantly improving.

High speed steel rolls Production equipment

High speed steel rolls Testing standards

The manufacture and inspection of high-speed steel roll products are strictly in accordance with the relevant requirements of national standards such as GB/T 13313-2008 “Roll Shore and Leeb Hardness Test Methods” and GB/T 1503-2008 “Cast Steel Rolls”.

Testing regulations:

Check the size and surface quality of each part one by one;
Carry out ultrasonic flaw detection three times one by one;
Carry out hardness test piece by piece;
The depth of the hardened layer of the roll body is affected by the manufacturing process.

High speed steel rolls Performance and reporting

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 to 5 times that of cast iron rolls.

The following table shows the use effect of high-speed steel rolls on continuous bar rolling mills:

Relaed product

casting iron rolls

casting steel rolls

forging steel rolls

hss rolls

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We can provide characteristic service and differentiated products according to the different conditions of rolling mill.

Service Include

Our Clients Give The Best Feedback

Although the price of LMMGROUP is 1.22 times that of the current rolling stock, through this trial, the data shows that the amount of steel passing through is more than 1.3 times higher than the current rolling stock, and the rolling groove wear of the off-line rolling is better than the current rolling stock.

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.

Need For Some Help ?

Professional engineers provide solutions and technical drawings

phone

86(411) 84174804

mail

lmme-business@lmmgroup.com.cn

Special product design, please send specific data and drawings to our mailbox or form.

Why Choose LMM GROUP

We have an excellent technical service team

The production process and before leaving the factory, all performance indicators are strictly tested, and the professional QC team controls according to the process.

The product is sold, the quality is tracked throughout the process, and the installation and use are guided throughout the process.

Our products have been running on more than 200 production lines and have rich experience

We can provide characteristic service and differentiated products according to the different conditions of rolling mill.

Stick to the agreement, do not do anything that violates the agreement, stick to the spirit of the contract to the end.

Service Guarantee

Pre-sales:

recommend suitable products according to the actual working conditions and needs of customers.It can also bedeveloped and designed according to needs, and customized services can be provided. During the epidemic, provide remote detection technical support

Strict quality control:

From raw materials, to the production process and befor eleaving the factory, all performance indicators arestrictly tested, and the professional QC team controls according to the process.