HORN 扩展 S274 刀具系统：新增烧结断屑槽型
New sintered chip-breaking geometries for the S274 tool system
HORN 扩展 S274 刀具系统，新增烧结断屑槽几何，用于切槽和车削，提升断屑控制与工艺可靠性。精烧结 .1A 断屑槽新增 0.8 mm 和 0.6 mm 窄切槽宽度，减少材料损耗并支持窄切削下的可靠断屑，适用多种材料，进给范围 0.03 至 0.12 mm/rev。新刀片提供 RS274 型及带压入螺纹嵌件的 RE274 变型，用于 RH274 刀柄，材质牌号为 TH35 和 IG35。S274 系统还新增 .NF 与 .PR 两种烧结断屑槽型，.NF 用于切槽和纵向车削，.PR 用于反车，进给范围均为 0.02 至 0.1 mm/rev，同样提供 TH35 和 IG35 牌号，尤其适合瑞士型车床。
20. July 2026 Press information
With the expansion of the S274 tool system, HORN is strategically broadening its portfolio for grooving and turning. New sintered chip-breaker geometries ensure improved chip control, greater process reliability and more cost-effective machining on Swiss-type lathes.
For grooving and parting off, HORN is adding narrow grooving widths of 0.8 mm (0.031") and 0.6 mm (0.236") to the precision-sintered .1A chip-breaker geometry. The new variants enable a significant reduction in material loss whilst also supporting reliable chip formation, even with narrow cutting widths. The geometry is universally suitable for a variety of materials and covers feed rates ranging from 0.03 to 0.12 mm/rev (0.0012 to 0.0047"/rev)
The new inserts are available as type RS274 and as the RE274 variant featuring a pressed-in threaded insert for RH274 toolholders. HORN offers the inserts in the carbide grades TH35 and IG35. Due to the optimised chip-breaker geometry, users benefit from improved chip control and high process reliability during grooving and parting off.
In addition, HORN is expanding the S274 system to include the new sintered chip-breaker geometries .NF and .PR. The .NF geometry has been specially developed for grooving and longitudinal turning, whilst the .PR geometry is designed for back turning. Both geometries ensure controlled chip formation and stable machining processes, particularly on Swiss-type lathes. The .NF geometry is suitable for feed rates of 0.02 to 0.1 mm/rev (0.0008" to 0.0039"/rev) during grooving and longitudinal turning. The .PR geometry covers the same feed rate range for back turning. Both types are universally applicable to various materials and are also available in grades TH35 and IG35.
With these new geometries, HORN is specifically expanding the range of applications for the S274 system for demanding grooving and turning operations. Users benefit from high process reliability, improved chip control and cost-effective machining, even with narrow grooving widths and complex machining tasks.
来源：HORN · 精密切削刀具 · horn-group.com