The influence of amperage of electric arc on microhardness in the area single and overlapping remeltings of HS 6-5-2 steel
Journal Title: Archiwum Odlewnictwa - Year 2011, Vol 11, Issue 3
Abstract
The present thesis depicts the microhardness of HV0,065 surface layer of high speed steel HS6-5-2 remelted with the electric arc. There were different surface layer variants of remelting used – the amperage was changed from 50 to 120A with the stable scanning speed of 300mm/min. There was also the influence of overlapping of the remeltings on the microhardness result. The highest average microhardness of the surface layer of high speed steel HS6-5-2 amounting 1100 HV0,065 was achieved by using the amperage of electric arc of 50 A. The overlapping of remeltings is connected with the possibility of occurence of the microhardness decrease in the area of overlapping of the heat influence zone of second remelting (another remelting) on the first remelting (the previous one).
Authors and Affiliations
A. Dziedzic
Keywords
Related Articles
- EP ID EP72289
- DOI -
- Views 126
- Downloads 0
The problem organization processing of pouring the cast iron in the context of using the chain of deliveries
The article undertakes the attempt adaptation problems of the present logistics to requirements specialized casting works with the special regard problems to the founding of cast iron. On the job one presented chosen pro...
The structure of connection of the AlSi5 – HS6-5-2 compound casting obtained by alphinising
The paper presents results of the analysis of the alphinising coat connection structure of the AlSi5 silumin – high speed steel HS6-5-2 compound casting. The alphinising coat was made in the AlSi5 silumin bath with tempe...
Ultrasonic methods for the tests of quality of casts from the alloys of aluminum
In this work we present the results of the check test of the properties of casts, made by the method of smelted models in the precise foun-dry THE ARMATURA in Lodz. Casts were made according to the new technological solu...
Application of heat treatment and hot extrusion processes to improve mechanical properties of the AZ91 alloy
The main aim of this paper is to evaluate the effects of hot working (extrusion) and hest treatment on room temperature mechanical properties of magnesium-based AZ91 alloy. The results were compared with as-cast conditio...
Method of efficiency improvement of software used for solidification process simulations
This paper presents a new method that can be used to improve the efficiency of applications used for simulations of solidification processes. The new approach concentrate on conductivity matrix building process. This ope...