Tungsten carbide roller ring

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

Прокатные кольца из твердого сплава (также известные как прокатные кольца из карбида вольфрама) обладают хорошей теплопроводностью. По сравнению с другими материалами они значительно превосходят их по жаропрочности, износостойкости и прочности. Кроме того, их твердость лишь незначительно снижается при воздействии высоких температур. Появление таких твердосплавных прокатных колец было обусловлено развитием высокоскоростных станов для прокатки катанки. В процессе дальнейшего развития и совершенствования...

Приложение: Это широко применяется в производстве высокоскоростной катанки, сортового проката и арматурной стали.

Company introduction

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.

Производственное оборудование

Компания располагает комплексным офисным пространством, включающим центр исследований и разработок (R&D-центр) и испытательный центр, а также современной крупномасштабной производственной линией по выпуску твердосплавных прокатных колец. Предприятие способно самостоятельно осуществлять весь цикл работ: от проектирования продукции, научных исследований и разработок, а также производства порошка карбида вольфрама — до формования, механической обработки, нарезки калибрующих канавок и фрезерования ребер на готовых твердосплавных прокатных кольцах. Объем производства достиг 1000 тонн (50 000 штук твердосплавных прокатных колец) в год. По этому показателю предприятие входит в число мировых лидеров.
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The production of tungsten carbide powder is first calcined into blue tungsten by APT (ammonium paratungstate) through electric heating rotary furnace.

The blue tungsten is then reduced in an automatic propelled reduction furnace to produce tungsten powder.

Sieve the tungsten powder through a vibrating sieve.

The sieved tungsten powder is separated by an airflow classifier to separate tungsten powder with different particle sizes.

The tungsten powder is added with carbon black and other additives according to a certain ratio, and then it is ball milled and mixed well for use.

Put the tungsten powder prepared with carbon black into the intermediate frequency carbonization furnace for carbonization.

Finally, the carbonized tungsten carbide powder is milled and screened by a ball mill mixer to produce high-quality tungsten carbide powder.

A photograph of tungsten carbide grains under a high-magnification scanning electron microscope.

Ingredients: Prepare tungsten carbide powder, cobalt powder and other rare elements in proportion

Add the prepared raw materials into the ball mill for 24 hours of wet grinding, and add a molding agent to fully mix the powder.

Put the wet-ground mixture into the spray drying tower and spray dry it for use.

Pressure molding: put the prepared powder into the mold, and press it with a hydraulic press;

The compacted billet is sintered in a low-pressure dewaxing and sintering integrated furnace to form a roller ring blank.

Finishing: Roll ring blanks are processed into finished roll rings through flat grinding, inner hole grinding, and outer cylindrical grinding; it can also be processed into high-line grooved roll rings, high-line threaded roll rings, and combined rolls for bars according to different rolling mills , rebar roll

Detection: Our company has a complete set of detection methods, starting from tungsten carbide powder as the raw material of the product, detecting the distribution of tungsten carbide tissue, carbon composition analysis, oxygen content and other chemical composition analysis, and tracking to each process of the product, and finally Roll ring blanks are tested for physical properties. Including the analysis report of the metallographic photo, the hardness and bending strength of the roll ring, etc., and finally the inspection of the appearance of the product, that is, the accuracy of the processing size.

Certification

LMM Service

We can provide special services and differentiated products according to the different working conditions of the 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 ?

One of the largest enterprises in China specializing in the production of high-performance high-speed steel roll series products

phone

86(411) 84174804

mail

По вопросам сотрудничества — business@lMMrolls.com

Крупнейший в мире металлургический завод по производству нерафинированной стали, более 70% высокопрочной стали для прутков и проволоки поставляется от нас.

Tungsten carbide roller ring