Measurement and simulation of residual stresses in grey cast iron as a function of shake-out temperatureVisa övriga samt affilieringar
2020 (Engelska)Ingår i: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 33, nr 2-3, s. 112-119Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
A high shake-out temperature after casting is beneficial from a production point of view due to the need of a shorter cooling line in the foundry. However, a higher shake-out temperature might also lead to increased residual stresses due to faster cooling. In order to get a good agreement between simulated and measured temperature curves it is important to adjust material data and heat transfer coefficients accordingly. A reduction of the thermal conductivity of the sand by 25% and a drastically increased HTC were the main adjustments. From the residual stress simulation, the most important lesson learned was the necessity to include the sand in the calculation. Especially internal sand cores can greatly restrict the thermal contraction of the casting. After this fine-tuning of the simulation a good agreement with measurements was obtained. It could be verified that an increased shake-out temperature will lead to significantly increased residual stresses.
Ort, förlag, år, upplaga, sidor
Taylor and Francis Ltd. , 2020. Vol. 33, nr 2-3, s. 112-119
Nyckelord [en]
casting, cooling rate, grey iron, Residual stress, shake-out, Cast iron, Heat transfer, Residual stresses, Fine tuning, Grey cast iron, Material data, Measured temperatures, Measurement and simulation, Residual stress simulations, Sand cores, Thermal contraction, Thermal conductivity
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-45111DOI: 10.1080/13640461.2020.1766279Scopus ID: 2-s2.0-85085297078OAI: oai:DiVA.org:ri-45111DiVA, id: diva2:1446975
Anmärkning
Funding details: Energimyndigheten; Funding text 1: The present work is part of the Swedish research project OLGA (Optimization of weight and volume intelligent cast components), project number 42227-1 and reference number 2016-001746 sponsored by Swedish Energy Agency.
2020-06-252020-06-252023-05-25Bibliografiskt granskad