Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: parametry powierzchniowe

Sortuj według:

Ogranicz wyniki do:

Evaluation of 2D and 3D Surface Roughness of Die Castings from Alloy AlSi9Cu3

Pałyga Ł., Stachowicz M., Granat K.

Archives of Foundry Engineering

2015

Vol. 15, iss. 1 spec.

75--80

This paper presents the possibility of evaluating the 3D surface roughness of a raw die castings made from alloy AlSi9Cu3, group EN AB- 46000. Castings were produced on BUHLER H630-B die casting machine with various piston speed. The study was conducted on casting bracket for seatbacks office chair, whose surface do not require further machining to obtain adequate surface quality. In order to reduce the impact of possible surface mold roughness wear, the specimen has been taken from the places furthest away from the supply system. Evaluates of 3D surface roughness of specimens was performed on specialized software delivered with scanning electron microscope. After conducting a series of test on surface topography was evaluated roughness of raw castings produced with variable parameters of process control, such as piston speed during II Phase. It was found that the method used to measure 2D and 3D roughness parameters could be more practical in evaluating the quality of die castings, but it should be combined with the way their manufacturing and other destructive and non-destructive evaluation.

A theoretical approach to the solutions of surface irregularities parameters

Haghi A. K.

International Journal of Applied Mechanics and Engineering

2005

Vol. 10, no 2

359-364

In this paper, the probability characteristics of surface irregularities parameters described by the composition of the deterministic component and the homogeneous random normal field were analysed. Formulae for the calculation of the mathematical expectation of the Ras parameter and the evaluation of its variance are given.