Cylindres en carbure de tungstène

Fabricant de bagues de laminage en carbure pour trains à fil machine, à béton et à barres

YATECH manufactures cemented tungsten carbide roll rings for high-speed wire rod, rebar, bar and tube rolling mills. Rings are HIP-sintered in grades YGR20 to YGR60, machined to a dimensional tolerance of ±0.002 mm, and grooved to your pass design. Hot rolling up to 800 °C and cold rolling are both supported, at rolling speeds from 2 to 120 m/s.

Every ring is produced to drawing. Send a PDF, DWG or STEP file with outer diameter, bore, width and groove profile — our engineers confirm feasibility, grade and price within 24 hours. Sample rings can be supplied before a volume order, so pass life can be measured in your own stand.

Pourquoi les laminoirs remplacent les cylindres en fonte par des bagues en carbure

Cast iron rings are cheap per piece and expensive per tonne. A carbide ring holds its groove profile far longer, so the mill changes rings less often, keeps a tighter oval across the campaign, and produces fewer cobbles at the finishing stands. The trade-off is capital cost, plus a review of ring cooling and handling before the first ring goes into the stand.

Grade selection follows stand position rather than preference: low-cobalt, high-hardness grades for the last finishing stands, where load is light and surface quality decides; higher-cobalt grades for pre-finishing and intermediate stands, where impact and thermal cycling dominate. Property data behind each grade sits on the cemented carbide grades page.

Carbure vs fonte vs HSS : ce qui change dans la cage

Each roll material is a different compromise between wear, toughness and cost. Carbide wins on wear and loses on brittleness, so the comparison only makes sense stand by stand.

Values are typical for hot rolling of long products. Actual pass life depends on stand position, rolled section, steel grade and cooling – measure it in your own mill rather than relying on a catalogue figure.

Nuances de bagues en carbure (série YGR)

Capacités de fabrication des bagues en carbure

Roll rings are produced to your pass design and arbor dimensions — outer diameter, bore, width and groove profile all come from your drawing, not from a catalogue. Tolerances can be held to ±0.002 mm with a fine ground finish, and HIP sintering is available where low porosity and even wear around the groove matter more than unit cost.

Profiles not illustrated above can still be manufactured. Send the drawing together with mill type, stand number and rolled product size; our engineers review feasibility, propose the grade, and confirm price, packing and lead time in the quotation. For ring preparation and maintenance, see carbide roll turning and grinding.

Paramètres d'exploitation et refroidissement

Carbide roll rings tolerate high rolling speed but not dry running. The window below is what we design to; confirm it against your mill layout before the first ring goes into the stand.

Carbide is brittle in tension: it resists abrasion far better than steel but chips if struck or misaligned during mounting. Store rings flat, lift them with a soft sling, and check the arbor seat before fitting.

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High-speed wire rod mill equipped with Yatech carbide roll rings — better stability, higher efficiency.