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Повышение износостойкости инструмента при Ð¼ÐµÑ Ð°Ð½Ð¸Ñ‡ÐµÑÐºÐ¾Ð¹ обработке Ñ‚Ñ€ÑƒÐ´Ð½Ð¾Ð¾Ð±Ñ€Ð°Ð±Ð°Ñ‚Ñ‹Ð²Ð°ÐµÐ¼Ñ‹Ñ Ð·Ð°Ð³Ð¾Ñ‚Ð¾Ð²Ð¾Ðº

научный доклад

Повышение износостойкости инструмента при Ð¼ÐµÑ Ð°Ð½Ð¸Ñ‡ÐµÑÐºÐ¾Ð¹ обработке Ñ‚Ñ€ÑƒÐ´Ð½Ð¾Ð¾Ð±Ñ€Ð°Ð±Ð°Ñ‚Ñ‹Ð²Ð°ÐµÐ¼Ñ‹Ñ Ð·Ð°Ð³Ð¾Ñ‚Ð¾Ð²Ð¾Ðº

Abstract

В данной работе установлена закономерность между износом инструмента и величиной контактных напряжений (τ конт), сопротивлением металла на сдвиг (τ мет) и их отношения (τ конт / τ мет) на примере сплавов АМц, Ст45, ХВГ, ВТ23. В случае механической обработки легкообрабатываемых материалов (например, сплава алюминия АМц), процесс стружкообразования облегчен вблизи сильных концентраторов напряжений, в материалах в которых релаксационные процессы заторможены, в условиях высоких скоростей, низких температур деформирования, с высокими контактными напряжениями (τ конт > 0,5 τ мет) и перед резцом протекает продольное пластическое оттеснение. В случае механической обработки труднообрабатываемых материалов (например, сплава титана ВТ23), обладающих высокой релаксационной способностью, в контактной зоне формируются низкие контактные напряжения, при этом поперечная пластическая деформация тормозит движение инструмента.

In the given work, a pattern is established between tool wear and the value of contact stresses (Ï„ cont), the metal shear resistance (Ï„ met) and their relationship (Ï„ cont / Ï„ met) on the example of AMC, St45, HVG, VT23 alloys. In the case of mechanical processing of easily processed materials (for example, aluminum alloy AMC), the chip formation process is facilitated near strong stress concentrators, in materials in which relaxation processes are inhibited, at high speeds, low deformation temperatures, with high contact stresses (Ï„ cont > 0.5 Ï„ met) and in front of the cutter, longitudinal plastic displacement occurs. In the case of machining difficult-to-process materials (for example, titanium alloy VT23) that have a high relaxation capacity, low contact stresses are formed in the contact zone, while transverse plastic deformation slows down the movement of the tool.

Keywords

indentation, индентирование, mechanical processing, Ð¼ÐµÑ Ð°Ð½Ð¸Ñ‡ÐµÑÐºÐ°Ñ обработка, Заготовки, Алюминий, Напряжения (Ð¼ÐµÑ .) контактные, Релаксация, Режущие инструменты

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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