The permeability measuring method and process of the lost foam pattern coating layer was introduced. 介绍了测定消失模涂料透气性的方法及过程。
A fine sand is coated and fired upon a mounted pattern made of ferrous or aluminum material. Research on Coating Process for Cold-mould of Centrifugal Casting Cast Iron Roller 一颗好的细砂是由一块模板涂层并炮击后形成的,而这模板是由亚铁或者铝质材料制成。离心铸铁轧辊冷型涂料涂敷工艺研究
Si diffusion coating is formed on steel substrate surface by chemical vapor deposition of SiH_4. The XRD pattern reveals that the main composition of Si diffusion coating is silicide FeSi. 采用硅烷(SiH4)直接分解的化学气相沉积技术(CVD),在钢基体表面生成硅扩散涂层。X射线衍射(XRD)分析表明硅扩散涂层的主要成分是铁的硅化物FeSi。
The low-angle XRD pattern and cross-sectional SEM indicated a well-defined composition modulation and layer structure of the multilayered coating. 小角度X射线衍射图谱、SEM以及AES测试结果均表明:ZrN/WN多层膜有很好的周期性调制结构,界面清晰。
Study on Shape of Spots of Pattern Coating 迷彩涂层斑块形状研究
Pattern Stripping from Coating in Non-occupying Coating Technology 非占位涂料技术中涂层的脱模问题
Latest Status& Developing Pattern of Cutting Tool Coating in Europe 欧洲刀具涂层最新状况及发展模式
A multicolour pattern coating film could be formed with a single spray. The basic principle, classification, selection of the components, technical specifications and factors affecting properties have been discussed. 论述了这类涂料的基本原理、分类、各组分的选择,以及主要技术特性和影响因素。
Analysis of the Thermal Degradation Products of the Expandable Pattern Material for EPC in Coating and Mould Sand 在涂料和型砂中气化模材料热裂解产物的分析研究
During the process of reformation, for stating the appropriate casting parts should be selected, the quality of pattern and coating should be strictly controlled, and the flask and vibrating platform need to be reasonably chosen according to its technological characterizations. 在实施过程中,必须根据其工艺特点,确定合适的起步产品,严格控制消失模和涂料的品质,合理选择砂箱和振实台。
The key basic technology in full mould casting process includes: material and formation of pattern, coating, vibratory fill of moulding sand as well as molten metal filling. 实型铸造法的关键基础技术包括:模样的材料及成形、涂料、型砂的振动充填、金属液的充填。
On the Teaching System and Developing Pattern of Coating Protection Technology Program 涂装防护工艺专业教学体系和培养模式的探讨
Multi colour pattern coating is an ideal building decorating material. 多彩花纹涂料是一种理想的建筑装饰材料。
Chemical constitution and microscopic pattern of the inorganic filler in a corona resistant magnetic wire insulating coating was tested and analyzed. 测试和分析了某型耐电晕电磁线绝缘漆中无机填料的化学组成和微观形貌,并测试该电磁线绝缘漆的紫外可见光吸收谱。
A series of experiments are made to explore the influence of processing parameter including the pattern density, coating thickness, pouring temperature and vacuum on mold filling in the magnesium alloy expendable pattern casting ( EPC) under controlled pressure. 研究了模样密度、涂层厚度、浇注温度、真空度等工艺参数对可控气压下镁合金消失模铸造时液态金属的充填形态和充型速度的影响,以及充型速度与充型形态之间的关系。
The experimental results indicate that main casting process parameters contain pressure and flux of filling gas, pyrolysis characteristics and density of foam pattern, thickness and permeability of coating, pouring temperature and vacuum degree. 研究表明:充型气体的气压与流量、泡沫模样的密度与裂解特性、涂层厚度及透气性、浇注温度、真空度等是镁合金真空低压消失模铸造过程中的主要影响因素。
Different wax pattern assembly design aimed at structural features of different castings can ensure convenient coating and stuccoing, favor hardening and drying of shell mold, avoid pileup of coating and bubble in shell mold. 针对不同的铸件结构特点,采用不同的蜡模组装方案,以保证涂料、撒砂方便,有利于型壳硬化和干燥,避免涂料堆积、以及产生气泡豆等缺陷。
The time from pattern removal to coating, different drying methods and coatings will have different effects on strength of core. 砂芯脱盒至浸涂料的放置时间、浸涂料后不同的干燥方法及不同涂料对砂芯的强度都有不同程度的影响。
The α-Fe peak, besides TiN, is revealed in X-ray diffraction pattern of the TiN coating. TiN层的X射线衍射和扫描电镜能谱分析表明,除TiN衍射峰外,还有αFe衍射峰。
The results showed that the pitting corrosion is the main corrosion pattern to Ti coatings, but VE-Ti coating would be more seriously corroded than IP-Ti coating when high porosity and little adhesion existed. 结果表明,小孔腐蚀是钛镀层的主要腐蚀破坏形态,但孔隙度大和粘附性差使VE-Ti呈现比IP-Ti镀层更加严重的腐蚀剥落行为;
In this thesis, grey model GM ( 1,1) is applied to study the corrosion pattern of hot-dipped zinc coating in sea water. And a mathematical model which is suitable for sea water corrosion study is established. 利用灰色GM(1,1)模型研究了热镀Zn层在海水腐蚀中的规律,建立了适合海水腐蚀研究特点的数学模型。
The ways of four-point bend test and acoustic emission were used, the failure pattern ( cohesive failure, coating debonding) of Ni-P electroless plating and composite plating that varied with the heat treatment temperature were obtained. 采用四点弯曲-声发射方法,对随热处理温度变化的Ni-P(Re)化学镀层及其复合镀层的失效形式(内聚失效、镀层脱粘)、启裂载荷和启裂挠度进行了检测。
A meltable pattern material with higher bending strength and hardness. and a coating material for preventing the sand, core from polluted by the molten pattern have been developed. 研究了具有较高抗弯强度和硬度的高强度可熔模料以及防止模料污染砂芯的涂料。
Influence of several parameters, including pattern material, sample size, pouring temperature, coating thickness, sprue height and vacuum rate, on the fluidity of AZ91 Mg alloy by EPC-V is studied. 研究了镁合金负压消失模铸造中,模样材料、试样尺寸、浇注温度、涂料厚度、直浇道高度以及真空度等因素对AZ91镁合金流动性的影响。
Thus, having inducted and summed up the making pattern method of hand-direct textile printing, including four methods: carving methods, knot paste method, coating method, and sub-version method. 从而归纳总结出手工直接印花花版制作的四种方法:雕刻法、结贴法、涂料法与分版法。
The pattern of growth on ice coating on centenary is varied in different weather conditions. The glaze and mixed song have big damage to catenary, so the anti-icing equipment is mainly used to prevent catenary from forming glaze. 不同气象条件下接触网覆冰的增长方式不同,雨凇覆冰和混合淞覆冰对接触网危害极大,防冰装置主要防止接触网出现雨凇覆冰。
The results show that the novel EPC coating can meet the requirements of Expandable Pattern Casting for the processing property of coating. 涂料工艺性能测试结果表明,本试验所研制的新型消失模铸造涂料能够满足消失模铸造对涂料工艺性能的相关要求。
Refractory powders, suspension and binder are three major components of Expandable Pattern Casting coating. 耐火粉料、悬浮剂和粘结剂是消失模铸造涂料的三大主要组分。
Coating is one of the key technologies in Expandable Pattern Casting ( EPC). The properties of coating, especially for high temperature permeability and high temperature surface strength, have significant impact on the quality of Expandable Pattern Casting. 涂料是消失模铸造的关键技术之一,涂料的性质尤其是涂层的高温透气性和高温表面强度对消失模铸件的质量有着重要影响。