湖南岳阳机床厂铸造车间的大、中铸件,采用于模干芯,铸型出烘炉后进行修整,然后再上一次涂料用柴油喷枪烘烤一遍合箱浇注。自1978年6月以来,用液化气代替柴油,取得良好的经济效果,相应对喷咀作一些改进,见右图。后面部分尺寸与燃油喷咀相同,只是将前罩由喇叭形改为直筒形,筒壁厚1.5毫米(见A—A剖面),在喷咀前段以三点焊于罩壳 Hunan Yueyang Machine Tool Plant foundry workshop of large and medium-sized castings, used in the dry core, the mold out of the oven after dressing, and then the last paint with a baking gun spray gun over the box pouring. Since June 1978, liquefied gas instead of diesel has been used to achieve good economic results. Correspondingly, some improvements have been made to the nozzle, as shown on the right. The size of the rear part is the same as that of the fuel nozzle except that the front cover is changed from a trumpet shape to a straight barrel shape with a wall thickness of 1.5 mm (see A-A section)