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WhatsApp: +86 18221755073The method of microwave heating hardening sodium silicate sand mould (sand core). China: 200810197391.5; (in Chinese). Google Scholar [20] F.C. Liu, Z.T. Fan, X.W. Liu, et al. Research on humidity resistance of sodium silicate sand hardened by twice microwave heating process.
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WhatsApp: +86 18221755073Two important factors affecting the performance of sand mold/core generated by 3D (3DP) are strength and dimensional accuracy, which are not only closely related to the reactivity of furan resin and the phase transition of silica sand, but also the curing agent system of furan resin. This paper studies the influence of gel time on the strength and dimensional …
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WhatsApp: +86 18221755073Foundry Hot Sand Core Shooter refers to the product cured by heating, usually heating on the mold, also known as hot core box mold, through the core shooting machine to make products, known as hot core box shooting machine.Electric heating is to put the electric heating rod inside the mold, and achieve the purpose of temperature regulation and constant temperature …
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WhatsApp: +86 18221755073The rock samples used in this study are originated from borehole DK-8 and SK-2 (Fig. 1), which are both drilling sites that recovered gas hydrate samples in northern Muli coalfield.They are gray-black muddy siltstone (DK-8-I) and fine-grained sandstone (SK-2-I, II, III) and their details are listed in Table 1.Five distinct hydrate-bearing intervals were detected in …
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WhatsApp: +86 18221755073Casting sand cores is an essential process for the creation of internal geometries in metal castings with complex shapes. To this aim, organic resins and natural silica sands have been traditionally used [1, 2].Unfortunately, organic binders often lead to the emission of large quantities of volatile organic compounds and hazardous air pollutants during various …
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WhatsApp: +86 18221755073This article will concentrate on reducing defect sand scrap by considering simple adjustments to your sand core process; either cold box or shell. View PDF. 9646. Categories. Archive (3) Articles (14) Blog (6) News & Announcements (8 ... Whitepaper Series Issue #2 Reducing Core Defects; Whitepaper Series Issue #1 Considerations for Manual ...
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WhatsApp: +86 18221755073The performance of sand core was improved by using the modified water glass as a binder and adding powder additives in the sand hardening process. The optimal proportion of the compound additives was determined by an orthogonal test, with a ratio of microsilica: polyvinyl alcohol solution: borax: B agent = 25: 20: 2: 1. The binder accounted for 2% of the sand by …
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