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
Cincin giling dari karbida semen (dikenal juga sebagai cincin giling tungsten karbida) memiliki sifat konduksi termal yang baik. Dibandingkan dengan material lain, jenis ini jauh lebih unggul dalam hal ketahanan terhadap panas, ketahanan terhadap keausan, serta kekuatan. Selain itu, tingkat kekerasannya hanya mengalami sedikit penurunan dalam kondisi suhu tinggi. Oleh karena itu, cincin giling karbida semen diciptakan seiring dengan munculnya mesin penggiling batang kawat (wire rod mill) berkecepatan tinggi, yang kemudian terus mengalami pengembangan dan penyempurnaan.
Aplikasi: Hal ini diterapkan secara luas dalam produksi kawat, batang, dan baja tulangan berprofil kecepatan tinggi.
Company introduction
LMM GROUP is cemented carbide steel industry, focus on the efficient solution, thus become the specialization of carbide roller ring.
उत्पादन उपकरण
Perusahaan ini memiliki ruang kantor terintegrasi yang mencakup pusat litbang (R&D) dan pusat pengujian, serta lini produksi cincin rol karbida modern berskala besar. Proses ini dapat diselesaikan secara mandiri dari tahap desain produk, penelitian dan pengembangan, serta produksi bubuk tungsten karbida, hingga pembentukan cincin gilas (roll ring) dari karbida yang disemen (cemented carbide), pemrosesan, pembuatan alur, dan penggilingan rusuk pada produk akhir. Skala produksinya telah mencapai 1.000 ton (50.000 buah cincin rol karbida semen) per tahun. Jumlah produksi ini termasuk salah satu yang tertinggi di dunia.
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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
One of the largest enterprises in China specializing in the production of high-performance high-speed steel roll series products
86(411) 84174804
Hubungi kami - business@lMMrolls.com
Kami dengan senang hati akan membantu dan memberikan saran jika Anda memiliki pertanyaan atau permintaan informasi.
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