撒砂

同时进行工艺分析与工艺改进，采用交替撒砂工艺方法，改善了型壳综合性能，降低了复合型壳工艺精铸件的制造成本，与原工艺比较，材料成本下降约50%

The comprehensive properties of the shell were improved and the cost was reduced by alternative stucco method based on analysis of the technology . Compared with the conventional technology , the cost of the materials was decreased by 50 % .

东风（11）型机车非正常空转撒砂及处理

Abnormal idle sanding and its handling of DF_ ( 11 ) locomotives

我国内燃机车撒砂系统的改进

Improvements of sanding systems for diesel locomotives in China

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。

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 .

为获得均匀性好、可重复性高的砂样，本文在以往研究成果的基础上，自主开发研制了一套自动撒砂设备，并针对福建标准砂进行了多组装样对比试验。

In order to obtain the sand sample of good uniformity and high repeatability , a set of automatic sanding equipment is developed . A series of tests are conducted to study the relative density on the influence of sand flow rate and drop height with Fujian standard sand .

受降尘影响的棉花叶片的叶绿素含量较低，而无降尘棉花叶片和撒石英砂棉叶的叶绿素含量差异不大。

Contaminated cotton leaves had low chlorophyll contents , the difference of chlorophyll content in cotton leaves from the other two treatments were not distinct .

金刚砂为金属氧化物骨料或金属骨料硬化剂，在地面混凝土表面初凝时干撒金刚砂可提高地面的耐磨性能，满足行车道等处的使用要求。

As the hardener for metallic oxide aggregates or metallic aggregates , when spread onto the initial-set concrete surface , corundum can improve the ground wearing resistance , meeting such requirement as is for carriageway .

涂撒混合粘结剂浆砂陶瓷型铸造新工艺

A New Method of Stuccoing Mixed Binder Slurry on Ceramic Mold