Modern precise high-power water-cooling systems for press quenching

• Autorzy: Plata M. , Piwnik J. , Patejuk A.
• Języki publikacji: EN

Abstrakty

EN

Demand for extrusions in transport applications is increasing rapidly. The extrusions must be strong, light, crashworthy and may have to undergo hydrofonning. This implies low wall thicknesses [...] in strong alloys that need very fast quenching to obtain the required T4 temper. Crashworthiness - the ability to absorb a lot of energy in crushing deformation - demands very unifoml properties throughout the section, and so does hydroforming. Various systems of water or air/water jets, with and without scanning, with and without arrangements for precisely aiming the jets, have proved effective for less difficult alloys in wall thicknesses down to 3 mm. These are unsuitable for the new types of transport extrusions, either inducing physical distortion or non-uniform mechanical properties. A novel cooling system that satisfies the new requirements uses laminar water jets of 50-250 [...] diameter in a densely packed array of up to 10/cm2. These are arranged in modules whose position and direction of aim can be adjusted relative to the part of the extrusion they cool, assuring linear cooling of all parts of the section at up to 500 K/s. The array of modules is very compact and not expensive. A sophisticated system of water microfiltration ensures that the fine nozzles do not become blocked.

Słowa kluczowe

EN

intermetalic type Fe-Al; press quenching

PL

faza międzymetaliczna; Fe-Al; prasa hartownicza

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 2
• Strony: 205--210
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Plata M.

autor

Piwnik J.

autor

Patejuk A.

• The Alcan Technology and Management Ltd., Technology Center Neuhausen, Switzerland

Bibliografia

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