Precision casting with a super duplex stainless steel, according to the particularity of material itself, must in the chemical composition, raw materials, furnace charging, melting, pouring, operating on a tight leash.The specific contents of the process as follows:(1) row of wax, air flow;(2) feeding riser casting simplified, in the form of the insulation dark riser;(3) casting ontology;The hot iron (stick), (4) simplified heat dissipation effect in the cylinder solidification process, is the result of chip fast cooling principle, make the lower end of the simplified rapid solidification;(5) put cold iron in circulating water cooling and hose connected to the circulatory system, to make in ceramic shell metal outside the entity of chill casting cube under the plane;Those within the sprue;All landowners of SPR, one is the sprue role, the second is the hot iron (stick), make the bottom feeding channel formation from bottom to top;End up with a hot iron (stick), is a fixed pouring system, exhaust, and the second is on the right side of the base plate feeding channel form a bottom-up}Pet-name ruby flood basin.
ron chromium aluminum is the chief drawback of electrothermal alloy material, especially between 400 ℃ to 800 ℃, use for a long time can make the material in precipitation "CrFe" type metal compounds, lead alloy plastic fell sharply, appear serious embrittlement phenomenon, so iron chromium aluminum series electric heating alloy material to avoid forming in this temperature region and use.Surface load refers to the unit surface area on the electric heating element for electrical values.The surface of the material using load intensity is higher, shorter service life of the material, but also the consumption of materials of the smaller.So, reasonable choice of components heat load intensity, the electric heating element has high thermal efficiency, long service life, the comprehensive effect of saving material.