Estudi de la influència del lubricant en operacions de mecanització

Els processos de mecanitzat amb arrencament de ferritja consisteixen en arrencar contínuament petits fragments de material de la peça a la que es vol donar forma mitjançant les eines de tall. En treballar amb metalls, aquestes forces de tall són importants, i provoquen el desgast de les eines així com un escalfament important de l’eina i la peça. Per aquest motiu s’introdueixen els olis de tall, amb les principals funcions de refrigerar i lubricar. Tradicionalment, aquests olis de tall s’han subministrat a raig, quedant la zona de treball inundada. Els últims anys, degut a les millores tecnològiques i per intentar estalviar amb olis de tall, s’ha ideat un nou sistema anomenat mínima quantitat de lubricant, el qual subministra petites gotes d’oli, no soluble en aigua, dins un flux d’aire a pressió. Aquest sistema, a més, s’injecta prop de la zona de treball, on és estricament necessari. Aquest sistema redueix considerablement el consum d’oli de tall, i a més, augmenta l’eficiència de la lubricació. A part, elimina els posteriors tractaments per reciclar l’oli de tall un cop perd les seves propietats. Per aquest motiu, es pretén estudiar la utilització d’un mètode semblant al de la mínima quantitat de lubricant, subministrant el mateix oli de tall que s’utilitza convencionalment però polvoritzar per tal de convertir-lo en un aerosol

Principles and practice of assembling machine tools.

Mode of access: Internet.

Illustrations and details of American machine-tools to accompany Notes and lectures on the mechanism of machine tools.

Mode of access: Internet.

Operator, organizational, direct support, and general support maintenance manual, including repair parts and special tools list : welding machine, arc, general and inert gas, shielded, transformer-rectifier type, AC and DC, 300 ampere rating at 60% duty cycle (Harnischfeger model DAR-300HFSG), FSN 3431-984-3401, (Harnischfeger model 2100H2007), FSN 3431-926-3746.

Includes index.

Unit, direct support, and general support maintenance repair parts and special tools lists for crane, wheel-mounted, 4-ton, self-propelled for aircraft maintenance and positioning (SCAMP), Grove Manufacturing Company model RT 41AA (NSN 3810-01-144-4885).

"May 1992."

Operator, organizational, direct support, and general support maintenance manual (including repair parts and special tools list and depot maintenance repair parts and special tools) for jack, dolly-type, hydraulic, 16-inch-lift, two-speed, 10-ton-capacity (Weaver Division of Dura Corporation model no. WA-75-A) (4910-289-7233).

Includes indexes.

Operator, organizational, direct support, and general support maintenance manual (including repair parts and special tools list and depot maintenance repair parts and special tools) : test set, generator and voltage regulator, automotive, 12-and 24-volt systems (Allen Electric and Equipment Company model no. 30-92) (4910-092-9136).

"15 October 1971."

Direct and general support maintenance manual repair parts and special tools list for test set, radar, AN/MPM-59 (X0-3), 4935-00-151-1323, (forward area alert radar system).

Includes index.

Organizational, direct support and general support maintenance repair parts and special tools list for tool outfit, Hydraulic Systems Test and Repair (HSTRU), NSN 4940-01-036-5784.

"August 1980."

Organizational maintenance repair parts and special tools lists : textile repair shop, trailer mounted (York Astro model D8700477, FSN 3530-819-2008; Army model SPV 35) (York Astro model D8700540, FSN 3530-900-8352) ... clothing repair shop, trailer mounted (York Astro model D8700337, FSN 3530-819-2007, Army model SPV 34) ....

Includes index.

Direct and general support maintenance repair parts and special tools lists : textile repair shop, trailer mounted (York Astro model D8700477, FSN 3530-819-2008; Army model SPV 35) ... clothing repair shop, trailer mounted ... (York Astro model D8700680, FSN 3530-999-8577).

Includes index.

Organizational maintenance repair parts and special tools lists : instrument repair shop, truck mounted, M185, M185A1, M185A2, M185A3 ... truck, wrecker, light, M60.

Includes index.

Operator, organizational, field, and DS & GS maintenance including repair parts and special tools lists (operation and maintenance instructions with illustrated parts breakdown) : T-4191 dial indicating depth gage.

Includes index.

Operator, organizational, direct support, and general support maintenance manual including repair parts and special tool lists ... : various machine gun mounts and combinations used on tactical and armored vehicles : mounts, machine gun ... 1005-774-6836 (M548 carrier).

"February 1973."