shell core

The paper analyses the forming causes of blank crack and points out that higher core sand strength, bottom-casting single-layer runner and solid structure of sand core are main factors of affecting the blank casting quality.

分析了大斗毛坯产生裂纹的原因,并指出芯砂强度高、底注单层浇道、砂芯为实心结构等是影响大斗毛坯铸造质量的主要因素。

And effects of various factors on properties of the binder and its bonded core sand were also discussed.

使用创新的干法复合反应工艺合成了改性淀粉粘接剂,讨论了各因素对改性淀粉及其粘接芯砂性能的影响。

After experiment on the technical properties of core sand made of the changedproperty starches as main binder,each technical properties of changedproperty starch binder is analysed with the method of mathematical analysis of grey connection.

以改性淀粉为主粘结剂配制芯砂并进行芯砂工艺性能试验 ,采用灰色关联的数学分析方法 ,对改性淀粉芯砂的工艺性能进行分析。

The paper analyses the forming causes of blank crack and points out that higher core sand strength, bottom-casting single-layer runner and solid structure of sand core are main factors of affecting the blank casting quality.

分析了大斗毛坯产生裂纹的原因,并指出芯砂强度高、底注单层浇道、砂芯为实心结构等是影响大斗毛坯铸造质量的主要因素。

Sand core has smooth surface, clear outline, and accurate size.

生产浇注试验表明 :砂芯表面光洁 ,轮廓清晰 ,尺寸精确 ,铸件缺陷少 ,无毒或低毒 ,和一般冷硬树脂砂比较 ,成本降低 3 0 %。

In this paper,the temperature field of Sodium silicate sand cores of the machine tool′s cast iron is measured.

本文对机床铸铁件水玻璃砂芯在浇注、冷却过程中的温度场进行了测定。

The production of ductile iron pipe fittings by using united assembly core has been briefly introduced in this paper.

介绍了采用组合砂芯的工艺方法生产球铁管件 ,以及制造此类砂芯的简易射芯机。

The developed sand cores collapsibility is good,which is tested by the die casting of ZL102 aluminium alloy, and it can meet the requirments of die casting technology and its quality.

研制的压铸用溃散性砂芯，用于压铸ＺＬ１０２铝合金，压铸件的孔型成形完好，无粘砂缺陷，溃散性好，可满足压铸工艺及铸件质量要

The die casting experiment shown that the sand cores developed for die casting are good in collapsibility and may meed die casting technology and quality of die casting's requre.

研制的压铸用砂芯，经压铸实验，溃散性好，可满足压铸工艺及铸件质量要求。

The Comparative Analysis of Diagenesis of Outcrop Sandstones and Core Sandstones in Chengzihe Formation、Muling Formation, Jixi Basin

鸡西盆地城子河组、穆棱组露头砂岩与岩芯砂岩成岩作用比较分析

Concrete-cored sand-gravel pile as a new technique for improvement of soft foundation is briefly introduced.

简单介绍了新型软基处理技术?混凝土芯砂石桩。

Clean process of animal protein glue mold and core sand foundry

铸造动物蛋白质胶型芯砂的清洁生产工艺

This paper has looked back resin sand development course, Fu Nan resin test , have determined mould and core sand technology in crankshaft casting;

本文回顾了树脂砂发展过程，对呋喃树脂自硬砂进行了试验，确定了曲轴型芯砂工艺；

Study on Protection Environment Type Core Sand Adhesive by Expansion-crosslink Technology

利用膨化—交联技术制备环保型芯砂粘结剂的研究

Study on The Preparation of Less Pollute Core Binders by Expansion-crosslink Technology

利用膨化-交联技术制备环保型芯砂黏结剂的研究

cord, foundry, used in the reparation of sand moulds

翻砂型芯,用于制备砂型

Two Storage Ways of Core in Core Storage and Expulsion System

砂芯储存、输送系统中的砂芯储存方式

core box, used in the preparation of sand moulds

型芯盒,用于制备砂型

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

chaplet, of iron or steel (excl. moulder's nails), for foundery moulding cores

型芯撑,钢或铁制（不包括型芯撑钉）用于翻砂制模型芯）

The calomel electrode has a small pinhole opening or wick.

甘汞电板上有一个针孔或砂芯。

Sand Care Making Technology and Mould Design for Cylinder Blolck and Camshaft of Model 491 Engine

491型发动机缸体、凸轮轴砂芯制芯工艺及模具设计

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

ALTERNATING FIELD DEMAGNETIZATION STUDY ON LOWER SINIAN SANDSTONES IN HSIUNING DISTRICT, ANHWEI PROVINCE

安徽休宁地区下震旦?休宁?砂岩的交变?鐾舜叛芯

The Development and Application of the New Light-colored Coating for Resin-bonded Sand Mold and Core for Aluminium Casting

铝铸件树脂砂型芯用新型涂料的研制和应用

Study on the Technology of Nylon Core Box for Sand Casting Based on Rapid Prototyping

砂型铸造用尼龙芯盒激光快速成型技术研究

Study on Performance of Pre-coated Sand Core Used for Cylinder Block and Cylinder Head

发动机缸体、缸盖用覆膜砂芯性能的研究