sand core

The experimental results show that a higher concentration of HPAM causes a larger IPV. The higher porosity of oily sand core causes a lower IPV and the oil flooding efficiency of HPAM will be higher.

油砂的孔隙率越高，不可及孔隙体积越小.表明HPAM在油砂中将有更高的驱油效率。

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Analysis is made on gas evolution changing pattern of furane bonded sand core material after vacuum hardening, on affection to compressive strength arid the microstructure after infrared drying.

分析研究真空硬化后的呋喃树脂砂芯材料发气性变化规律、红外烘干后对抗压强度的影响及其微观结构特点。

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Combination of Chinese Calligraphy with NiXing Earth Ware; Application of Far Infrared Heating Technology in Oven to Dry Unfired Pottery and Sand Core

从坭兴陶刻字看书法与陶瓷结合之路远红外加热技术在坭芯和砂芯烘干炉中的应用

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In core making with cold core box, the solvent content in the binding material has a greater influence on the sand core strength.

采用冷芯盒法制芯时，粘结剂中的溶剂含量对砂芯强度有较大影响。

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Research has believed that veining in admission and exhaust passage of diesel engine cylinder head may mainly be caused by crack of sand core occurring in high temperature phase change expansion.

研究认为，柴油机气缸盖进、排气道脉纹的产生主要是由硅砂高温发生相变膨胀导致砂芯开裂引起的。

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the application of plc to electric control system for organic ester water glass self curing sand core production line

PLC在有机酯水玻璃自硬砂制芯生产线电气控制系统中的应用

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technique of making sand core of water jacket for 462q engine cylinder block and design of its hot box

462Q气缸体水套砂芯制芯工艺及热芯盒设计

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Therefore, these mixed used Sand reclamation, in place of new sand core making a new topic.

因此，如何把这些混合旧砂再生，代替新砂制芯成为新的课题。

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Because of bad working conditions, the flowing components are weared very serious in the mud sand pump of the sand mining ship and the slurry pump which is used desilting. The impeller which is the core components in the pump was weared the most outstanding.

采砂船上的泥沙泵和清淤用的渣浆泵由于工况恶劣，泵的过流部件磨损非常严重，其核心部件叶轮的磨损最为突出。

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Application of Automatic Storage and Retrieval System in Sand Core Storage and Feeding System

自动化立体仓库在砂芯储存、输送系统中的应用

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Application of Far Infrared Heating Technology in Oven to Dry Unfired Pottery and Sand Core

远红外加热技术在坭芯和砂芯烘干炉中的应用

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we adopt measures such as selection of core sand, strengthening exhaust property of sand core, control of pouring temperature and speed to prevent blowhole. meanwhile, reject ratio containing the blowhole is controlled within 1%.

通过正确选用芯砂，加强砂芯的排气，严格控制浇注温度、速度等工艺措施，使气孔缺陷得到有效控制，气孔废品率在1%以下。

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The reason back of sand cores were related to core-making equipment, core materials and core-making process.

砂芯脱壳的原因与制芯设备 、 制芯材料、制芯工艺有关.

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The animal glue is used to make mold and core sand binder, and infrared spectrum ( IRS), chemical element analysis, and thermal lost-weight analysis are used to explore the recycling property and reused process of glue-based mold and also its core sand environmental influences.

采用近乎属于固体工业废物的动物胶做型芯砂黏结剂，用红外光谱分析、热分析及元素分析等方法探讨了其对环境的影响以及所制造型芯砂的回用性能、再生工艺等。

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DP 2 、 D 4 are mainly used for ramming sand core of small mould in foundry practice , whereas.

D4型气动捣固机,主要用于铸造行业捣固砂芯或小砂型.

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The weight loss of core sand after immersion in test solution is of < 7% and> 60%;

储层水敏岩心在HDS01和SSN13溶液中的失重率分别为60%；

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Theoretical Calculation on Adhesion Strength of Non occupying Coating to Sand Core

非占位涂料与砂芯附着强度的理论计算

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To eliminate cracks in the casting, the hollow sand core is applied.

为消除铸件中出现的开裂现象, 采用中空型芯以增加铸型的退让性.

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The factors affecting the compacting in negative pressure sand filling moulding and in core making for resin-bonded sand have been studied.

研究了影响树脂砂负压填砂造型和制芯紧实的因素。

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Digital Controlling Processing for Bottom Die of Sand Core of Cylinder Head

缸盖砂芯下模体的数控加工

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