One stop solution for Tungsten carbide ring rolls

tungsten carbide rolls ring

Brand name: LMM GROUP
Packing Details : Wooden box with fumigation or Wooden Fram
Delivery Details: 30~60days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight

LMM GROUP have been supplied to world’s top steel manufacturer :

Australia: Liberty steel/Bluescope steel
Iran: Oxin steel
Italy: JSW steel
United Arab EmiratesEmirates 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

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

 

Roll rings for high speed rolling of ribbed steel bars
made in china tungsten carbide roll ring for steel making
Composite cemented carbide roll rings
made in china tungsten carbide roll ring for steel making
KOCKS cemented carbide roll ringsmade in china tungsten carbide roll ring for steel making
KOCKS Cemented Carbide Roll Rings for KOCKS three-roll mil to replace the original bllmilling of cast iron roll ring,mainly the production of bearing steel, spring steel, alloy steel and other special steel, steel surface and tolerance con-trols are clearly better than cast iron roll ring and wear-resistant is good, life is a cast iron roll ring 10 times.
Three dimensional carbide rolls tor cold rolling ot ribbed steel bars
The steel reinforcement rlled by three dimensional carbide rolls has fine appearance surfacehigh precision in dimension andclear ribbed mark. Thoseimproved the comprehensive properties Of rbbed steel reinforcements. The primary rllingtonnageare 600 -2000tons. which is 20- -30 times more than that of common tool steelrolls. Because cemented carbide rolls can bereground and used again. the production cost is reduced greatly. That markedly improved productive fficiencyand profit.

Table of grades and properties of carbide roll rings and related data

Grade

Wc(%)

Co(%)

Ni(%)

Cr(%)

g/cm³

≥HRA

≥N/mm²

PL08R

92

8

14.7±0.15

88.0

2800

PL10R

90

10

14.5±0.15

87.5

2750

PL12R

88

12

14.2±0.15

86.0

2700

PL15R

85

15

14.1±0.15

85.0

2600

PL18R

82

18

13.7±0.15

83.5

2650

PL20R

80

20

13.5±0.15

82.5

2550

PL25R

75

25

13.1±0.15

80.5

2450

PL30R

70

30

12.7±0.15

79.0

2350

PL06H

94

8

14.8±0.15

89.0

2850

PL08H

92

10

14.7±0.15

88.5

2750

PL10H

90

15

14.5±0.15

88.0

2700

PL15H

85

20

14.1±0.15

85.0

2650

PL20H

80

25

13.5±0.15

83.0

2600

PL25H

75

30

13.1±0.15

81.5

2550

PL30H

70

32

12.7±0.15

80.0

2450

PL32H

68

32

12.5±0.15

78.5

2300

YGR20

90

10

14.4±0.15

87.5

2400

YGH25

88

12

14.3±0.15

86.5

2300

YGH30

85

15

14.2±0.15

85.0

2700

YGR40

82

18

13.7±0.15

83.5

2600

YGR45

80

20

13.5±0.15

82.5

2500

YGR55

75

25

13.1±0.15

80.0

2400

YGR60

70

30

12.8±0.15

78.0

2300

YGR40T

85

15

14.1±0.15

84.5

2700

YGR45T

80

20

13.5±0.15

84

2580

Grade

Recommenden application

PL08R

Maximum
hardness, excellent wear resistance in the serieso. Used in the last 1-2 stands of good high speed rolling mills for rolling common and hard steel bars.

PL10R

Higher wear resistance. mode rate impact resistance in the series. Used in the last 1-2 stands of good high speed finishing rolling mils for rolling common and hard steel bars.

PL12R

High wear resistance and corrosion resistance. Used in the last 1~4 stands of finishing mills

PL15R

Moderate wear resistance and impact resistance, good for general purposes. Used in the last1-4stands or all stands of finishing miffs.

PL18R

Good toughness and thermal crack resistance,good for general purposes Used in most stands of the finishing mills and in the rear stands of common mills.

PL20R

Best for general purposes. Used in the front stands of good rolling mills and in the rear stands of common rolling mills.

PL25R

Used in the first and second stands of finishing rlling mitis and in the stands of pre-finishing rolling mills For every stand of rolling lines for low speed rolling low precision and unstable operations.

PL30R

Maximum binder content in YGH series,good toughness and thermai crack resistance, Used in the stands of pre-finishing roiling milis and for roll rings for hot rolling of ribbed steel.

PL06H

It possesses the highest hardness and the best wear-resistance among all thevarieties of cemented carbide roll rings,thus used for the rolling of common wire and hard wire on the last 1~2 stands of high-speed wire rod finishing mill

PL08H

It possesses better wear-resistance and moderate impct-resistance with the hardness second to PL06H among all the varieties,thus used at the last two stands of high-speed wire rod finshing mill

PL10H

It possesses the moderate wear-resistance and impact -resistance ,thus used at the third-fourth stands from bottom of high-speed wire rod finishing mill .

PL15H

Moderate wear resistance and impact resistance, good for general purposes. Used in the last 1~4 stands or all stands of finishing miffs.

PL20H

Best for general purposes. Used in the front stands of good rolling mills and in the rear stands of common rolling mills.

PL25H

Maximum binder content in YGH series,good toughness and thermai crack resistance, Used in the stands of pre-finishing roiling rnilis and for roll rings for hot rolling of ribbed steel.

PL30H

Maximum binder content in YGH series,good toughness and thermai crack resistance, Used for roll rings for hot rolling of ribbed steel and in the stands of pre- finishing rolling milis .

PL32H

With good toughness and impact resistance,used for bar,deformed bar finish stand rolling

YGR20

High wear resistance and corrosion resistance Used in the last 1-2 stands of finishing mills.

YGH25

High wear resistance and corrosion resistance. Used in the last 1-3 stands of finishing mills.

YGH30

Good toughness , wear resistance , corrosion resistance and thermal crack resistance .Used in the
middle and rear stands of finishing mills.

YGR40

Good toughness and thermal crack resistance, good for general purposes Used in most stands of the finishing mills and in the rear stands of common mills.

YGR45

Good toughness and thermal crack resistance Used in the front stands of finishing mills.

YGR55

Good impact resistance Used in the stands of pre-finishing rolling mils for hot rolling ribbed steel barsand they can be machined with turning and milling

YGR60

Good impact resistance.Used for hot rolling ribbed steel bars and in the first and second stands of pre-finishing rolling mills.

YGR40T

With good toughness and shock resistance,used for general high speed wire or common rolling machine,rolling small size deformed bar finish stand

YGR45T

With good toughness and shock resistance,used for general high speed wire or common rolling machine,rolling small size deformed bar finish stand

 

Production Process and Production Facilities

Raw material:

The main raw material is tungsten carbide powder. LMM funded 20,000,000.00 USD, and imported the carbide powder manufacture equipment in 2010.
Tungsten carbide powder is produced by APT, and burning in electric heating rotary calcination furnace, and then come into being blue tungsten oxide, then through burning and producing the tungsten powder.

Screened & Classified:

The tungsten powder is screened by a vibrating screen. And then through the air classification equipment, it is classified into different granularity.

Ball Milling & Mixxing:

Tungsten powder in a certain proportion, adding carbon black and other additives after ball milling and mixing.

High Quality TC Powder:

The tungsten powder with good carbon black is added to the intermediate frequency carbonization furnace. In the end, the WC the powder was milled by the ball milling machine, and the high quality tungsten carbide powder was produced.

Forming Powder:

The WC powder, cobalt powder, and other rare elements are formulated in good proportion. Join the ball mill through the 24 hours of wet grinding, and mixed into the forming powder, then put them into the spray drying tower.

Press & Burning:

Compression molding will be prepared and put the powder into the mold, press molding with a hydraulic press; Put the roughcast into the furnace and burn it into the roll roughcast.

Finish Machine:

Through flat grinding, internal hole grinding, and cylindrical grinding comes into being the product of the ring. Also according to different rolling, different rolling mills, processed into wire grooved roll rings, wire thread roll rings, bar combination rolls, and roll steel.

Recommended applications of grades for carbide roll rings

GradeRecommended applications
LMM08RMaximum hardness, excellent wear resistance in the series. Used in the last 1~2 stands of good high-speed rolling mills for rolling common and hard steel bars.
LMM10RHigher wear resistance. Mode rate impact resistance in the series. Used in the last 1~2 stands of good high-speed finishing rolling mills for rolling common and hard steel bars.
LMM12RHigh wear resistance and corrosion resistance. Used in the last 1~4 stands of finishing mills.
LMM15RModerate wear resistance and impact resistance, good for general purpose. Used in the last 1~4 stands or all stands of finishing mills.
LMM18RGood toughness and thermal crack resistance, good for general purpose. Used in most stands of the finishing mills and the rear stands of common mills.
LMM20RBest for general purposes. Used in the front stands of good rolling mills and in the rear stands of common rolling mills.
LMM25RUsed in the first and second stands of finishing rolling mills and in the stands of pre-finishing rolling mills. For every stand of rolling lines for tow speed rolling low precision and unstable operations.
LMM30RMaximum binder content in LMMR series, good toughness and thermal crack resistance. Used in the stands of pre-finishing rolling mills and for rolling rings for hot rolling of ribbed steel.
LMM32RWith good toughness and impact resistance, used for bar, deformed bar finish stand rolling.
GradeRecommended applications
LMM06HIt possesses the highest hardness and the best wear-resistance among all the varieties of cemented carbide roll rings, thus used for the rolling of common wire and hard wire on the last 1~2 stands of high- speed wire rod finishing mill.
LMM08HIt possesses better wear-resistance and moderate impact-resistance with the hardness second to LMM06H among all the varieties, thus used at the last two stands of high-speed wire rod finishing mill.
LMM10HIt possesses the moderate wear-resistance and impact resistance, thus used at the last 3~4 stands of high-speed wire rod finishing mills.
LMM15HModerate wear resistance and impact resistance, good for general purpose. Used in the last 1~4 stands or all stands of finishing mills
LMM20HBest for general purpose. Used in the front stands of good rolling mills and in the rear stands of common rolling mills.
LMM25HMaximum binder content in LMMH series, good toughness and thermal crack resistance. Used in the stands of pre-finishing rolling mills and for roll rings for hot rolling of ribbed steel.
LMM30HMaximum binder content in LMMH series, good toughness and thermal crack resistance. Used for roll rings for hot rolling of ribbed steel and in the stands of pre-finishing rolling mills.
LMM32HWith good toughness and impact resistance, used for bar, deformed bar finish standing rolling.
GradeRecommended applications
YGR20High wear resistance and corrosion resistance. Used in the last 1~2 stands of finishing mills.
YGR25High wear resistance and corrosion resistance. Used in the last 1~3 stands of finishing mills.
YGR30Good toughness, wear resistance, corrosion resistance and thermal crack resistance. Used in the middle and rear stands of finishing mills.
YGR40Good roughness and thermal crack resistance, good for general purpose. Used in the most stands of the finishing mills and in the rear stands of common mills.
YGR45Good toughness and thermal crack resistance. Used in the front stands of finishing mills.
YGR55Good impact resistance. Used in the stands of pre-finishing rolling mills for hot rolling ribbed steel bars and they can be machined with turning and milling.
YGR60Good impact resistance. Used for hot rolling ribbed steel bars and in the first and second stands of pre-finishing rolling mills.
YGH40TWith good toughness and shock resistance, used for preferably high speed wire rolling machine, rolling small size deformed bar finish stand.
YGH45TWith good toughness and shock resistance, used for general high speed wire or common rolling machine, rolling small size deformed bar finish stand

FAQs about tungsten carbide rolls

Tungsten carbide rolls can be used in the intermediate finishing sections of rolling mills.

LMM can produce tungsten carbide rolls with outer diameters of up to 550 millimeters.

To convert from cast iron or steel rolls to tungsten carbide rolls, LMM carbide rolls product speciailists will partner with rolling mills to revise roll cooling, machining, and handling capabilities. Most rolling mills can easily adapt from cast iron to tungsten carbide.

LMM tungsten carbide rolls have a longer lifespan of up to 20 times longer than that of cast iron rolls due to their higher wear resistance. This results in reduced stoppage time for the rolling mill along with higher productivity and lower operational costs

The minimum rolling speed tungsten carbide rolls can be used at is one meter-per-second (1 m/s).

Proper cooling is crucial to ensure optimal performance of carbide rolls. The minimum recommended pressure is 4-to-6 bar and 250-to-300 liters per minute per passform.

Production equipment

The company has an integrated office space including a R&D center and a testing center, and a large-scale modern carbide roller ring production line. It can independently complete the entire process from product design, research and development, production of tungsten carbide powder to cemented carbide roll ring forming, processing, slotting, and rib milling of finished products. It has reached a production scale of 1,000 tons (50,000 pieces of cemented carbide roller rings) per year. The output ranks among the top in the world.

Whole process supervision of the quality of raw material

LMM tries its utmost to meet the demand of customers. Our professional R&D department and production line will provide the direct and effective quality and service for you.

With over twenty years’ experience on the production of cemented carbide roll rings, LMM has established an inte-grated system including R&D and extraction of powder and production and marketing of alloy . Through our professional service, you can make the correct choice for the material to match your product.

Certification

The company strictly according to modern enterprise management requirements set up a perfectquality assurance system, and passed the ISO9001:2008 quality management system certification,ISO14001:2004 environmental management system certification, OHSAS18001:1999 occupationalhealth and safety management system certification.

Service Display

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.

After-sales service:
Quality assurance and Resolution of any issues that arise 

Product Brochure Download

About LMM

LMM GROUP is cemented carbide steel industry, focus on the efficient solution, thus become the specialization of carbide roller ring.

  • Established a strong r&d team,and constantly introduced from abroad advancedproducton technology,
  • Specialization , and the scale of production mode, make we concentrate hard alloy rollring this industry, make our products more fineness and seriation,
  • Established a strong marketing service team,fully meet the requirements of different customers.
    with the three advantages,enable us to continually provide userswith different solution for users to create more value.

Get a quote quickly

Get in touch today and receive a complimentary consultation for refractory material

Get A Free Consultation
And Estimate