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 Posted: Wed 2:26, 05 Jan 2011 Post subject: stivali ugg Packing chamber of the dissimilar meta |
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Packing chamber of the dissimilar metal friction welding process of rubbing
ractionspectrumandEMPAisusedtoanalysethemi-erostructureofausteniticalloycastiron. andmanykindscorrosiontestmethodsisusedtoinvestigatethecorrosionbe-havlourofthealloyeastiron. Experimentalresultsshowthat. inthisalloycastiron, besidesgraphiteandaustealticbase, hadyetalloyingcementite. Itbadgoodcorrosionresmtanceinheatsaltsolutionmediumandhigherelectrochemicalcor-rosionresistance. ptttingresistanceandintergranularcorrosionresistancepropertiesafter62 (1 ℃ × 1.5hACheattreat-ment.Adition.theausteniticalloycastironhadyetbettersyntheticalmechanicalpropertiesandsatisfiedcastingproper-ties, itprosesseswideappliedprospects. [Keywards] austeniticcastironcorrosionbebaviourmechanicalpropertiescastingproperties1 Introduction Pina salt in the production process, the equipment, a large number of salt and fluid transfer pumps, valves and pipes,[link widoczny dla zalogowanych], because by the high temperature strong salt solution and salt particles corrosion, erosion, very poor working conditions,[link widoczny dla zalogowanych], equipment life is very short. Because of the austenitic cast iron in the salt solution, water, acid and alkali in the good performance of corrosion and abrasion,[link widoczny dla zalogowanych], also resistant to erosion and thermal expansion _l, so the austenitic cast iron to carry out the research work is essential. In this paper, optical microscopy, x-ray diffraction and electron probe observation and analysis of the austenitic alloys The microstructure of cast iron and method of using a variety of corrosion test in the heat of the alloy cast iron salt solution in the electrochemical corrosion behavior and corrosion resistance, pitting corrosion and crystal asked. In addition, Taiwan also tested austenitic The mechanical properties of gold and iron casting performance. 2 alloy cast iron cast iron smelting and heat treatment Taijin used in medium frequency induction furnace smelting of non-oxidation. the charge with a steel metal pig iron, scrap,[link widoczny dla zalogowanych], ferrosilicon, ferromanganese, electrolytic nickel , ferrochrome and copper panels. Its chemical composition shown in Table l. (mm) thick 25mm square bar with the Kiel specimen,[link widoczny dla zalogowanych], and test their casting performance. with a platinum platinum-rhodium thermocouple test block rapid heat treatment In the automatic temperature control in the box-type furnace, the austenite HT200 alloy cast iron and are cooled by 620 ℃ × l_5h treatment, l88 l050 ℃ × l5h stainless steel using water solution treatment. After the round test bars after heat treatment processed into 25 × The uniform corrosion specimens 4mm square test bars processed into lo × l0 × 4 (mm) of the electrochemical corrosion and pitting and intergranular corrosion testing specimens processed by the Kiel specimen tensile test and impact test bars block. praise】 chemical composition of test materials (material name CSiIMnlPIS {NijCulCrAP ~ CR2.141l6l. -031. _02ll5-64l6.38l3_05188008118. 88l.. o2l. .025 l-l18.42HT20068I. .5 lo-05l. .04 l-l -I a * for the austenitic alloy cast iron grinding code, and the remaining for the trial of contrast material .3 3.1 Microstructure observation and analysis of the microstructure observed using 30 × 150mm Sand casting rod, 15 × 15 × 150 · Female .38 years old. engineers. \
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