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Odrezovanje mehkih materialov z velikimi hitrostmi
Pušavec, Franci (Author), Krajnik, Peter (Author), Kopač, Janez (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-10DJAV9I This link opens in a new window

Abstract
Široko uporabljan material, kakršen je mehka siva litina, je velika obremenitev rezalnih orodij pri suhem odrezovanju z velikimi hitrostmi (OVH). Vzrok zapletenosti obdelave so edinstvene kombinacije lastnosti obdelovanega materiala, to so: trdnost, trdota, trdi vključki in kemična obrabna obstojnost. Take lastnosti so sicer potrebne za izpolnjevanje zahtev izdelka, vendar pa lahko pri velikih temperaturnih in mehanskih obremenitvah negativno vplivajo na kakovost obdelane površine, sposobnost postopka in storilnosti. Te obremenitve se na orodju med drugim kazejo kot hitra in prekomerna obraba. Zato je namen prispevka predstaviti smernice za povečanje obdelovalnosti mehke sive litine pri OVH. Izboljšanje obdelovalnosti je lahko doseženo s pravo kombinacijo materiala rezalnega orodja in tehnologijo odrezovanja prilagojeno kupčevim zahtevam.

Language:Slovenian
Keywords:odrezavanje z velikimi hitrostmi, siva litina, obraba orodij, kubični bornitrid (CBN), nastanek igle
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2006
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 706-722
Numbering:Letn. 52, št. 11
UDC:621.9.02:621.91
ISSN on article:0039-2480
COBISS.SI-ID:9777435 Link is opened in a new window
Views:437
Downloads:95
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:English
Title:High-speed cutting of soft materials
Abstract:
Commonly used materials like soft grey cast iron represent a serious load for cutting-tool materials during dry high-speed cutting (HSC) due to the material's unique combination of properties, such as high toughness, ductility, hard inclusions and chemical wear resistance. Although these properties are desirable design requirements, they pose a great challenge to machining due to the high temperatures and stresses generated during the cutting to ensure high surface quality, process capability and productivity. This loading reduces the bonding strength of the tool substrate, thereby accelerating the tool wear. This paper provides guidelines for increasing soft grey cast iron's machinability during HSC. The improved machinability of such grey cast iron during HSC can be achieved by combining the appropriate tool material and machining technology adjusted to the part requirements defined by a customer.

Keywords:high-speed cutting, grey cast iron, tool wear, CBN (cubic boron nitride), burr

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