Results 71 to 80 of about 251,961 (205)

Environmental Audit improvements in industrial systems through FRAM [PDF]

open access: yes, 2018
Environmental risk management requires specific methodologies to focus audit activities on the most critical elements of production systems. Limited resources require a clear motivation to put attention on specific technological, human, organizational ...
Costantino, Francesco   +2 more
core   +1 more source

Wear Performance of Hardened 1.2333 Cold Work Tool Steel by Plasma Electrolysis

open access: yesActa Physica Polonica A, 2014
Kumruoglu, L.C.; University of Sakarya, Engineering Faculty, Metallurgy and Materials Department, Sakarya, Turkey; email: lkumruoglu@sakarya.edu ...
Özel A., Kumruoglu L.C.
openaire   +2 more sources

Full Density Powder Metallurgical Cold Work Tool Steel through Nitrogen Sintering and Capsule-Free Hot Isostatic Pressing

open access: yesMetals
Vanadis 4E (V4E) is a powder metallurgical cold work tool steel predominantly used in application with demand for wear resistance, high hardness, and toughness.
Anok Babu Nagaram   +5 more
doaj   +1 more source

Optimization of friction and wear characteristics of varied cryogenically treated hot die steel grade AISI-H13 under dry condition

open access: yesFriction, 2017
Cryogenic treatment (CT) is a relatively new field, which has emerged during the last three decades of the twentieth century. However, its impact on material shaping and making tool life, and enhancement of their mechanical properties are quite ...
Sanjeev Katoch   +2 more
doaj   +1 more source

Thruster sealing system and apparatus [PDF]

open access: yes, 1992
A thruster nozzle sealing system and apparatus is provided for protection of spacecraft thruster motors. The system includes a sealing plug, a sealing plug insertion tool, an outer cover, an outer cover attachment, and a ferry flight attachment.
Svejkovsky, Paul A.
core   +1 more source

Vpliv podhlajevanja na lomno žilavost martenzitnega nerjavečega jekla AISI 420 [PDF]

open access: yes, 2017
Cryogenic treatments have been employed over the last three decades in both tool and high-alloy steels to improve wear resistance, mainly through the transformation of retained austenite and the precipitation of fine carbides.
Perez Ipiña, Juan Elias   +2 more
core   +1 more source

Effect of solidification rate on microstructure and primary carbides of AISI DC 53 cold work tool steel [PDF]

open access: yesChina Foundry, 2019
The solidification behavior of AISI DC 53 cold work tool steel was investigated by means of a cooling curve and its first derivative. Copper and sand wedge-shaped molds were used to obtain various solidification rates. To reveal the cooling rate degree
İsmail Seçkin Çardaklı   +1 more
doaj  

Laser composite surfacing of A681 steel with WC + Cr + Co for improved wear resistance

open access: yesJournal of Materials Research and Technology, 2017
Laser surface alloying (LSA) is a surface treatment technique. It involves the near surface melting by a powerful laser beam with a pre-deposited or concomitantly added alloying element along with a part of the underlying substrate to form a surface ...
Moisés Felipe Teixeira   +5 more
doaj   +1 more source

Effect of laser energy density on microstructural evolution and wear resistance of pre-hardened DC53 steel by laser transformation hardening

open access: yesJournal of Materials Research and Technology
Pre-hardened DC53 cold work tool steel is severely limited in its service life as a mold due to the inadequacy of its current microstructure. To precisely control its microstructure and improve its wear resistance, laser transformation hardening (LTH ...
Jian Zhang   +8 more
doaj   +1 more source

Experimental Investigation Of Segregation Of Carbon Atoms Due To Sub-Zero Cryogenic Treatment In Cold Work Tool Steel By Mechanical Spectroscopy And Atom Probe Tomography

open access: yesArchives of Metallurgy and Materials, 2015
In this work, we present mechanical spectroscopy of cold work tool steel subjected to sub-zero cryogenic soaking treatment to reveal the carbon segregation and the subsequent carbides refinement.
Min N., Li H.M., Xie CH., Wu X.C.
doaj   +1 more source

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