1、Machining the Machining the ngv assembly 加工的加工组装 NGVTo ensure concentricity,the ngv assembly should all be machined in one setting. Use the plywood faced faceplate used earlier and bore a hole to a snug fit with the welded vane of the ngv. Hopefully you will find your original attaching screw holes
2、still line up and the turbine shroud will run true, If not, your objective is to make the turbine shroud run as true as you can!为了保证同心度，对 NGV 组装都应加工于一体的设置。使用前面所用的夹板面临面板和钻孔的紧密贴合与 NGV 的焊接风向标。但愿你会发现你原来的安装螺钉孔依然排队涡轮护罩将一如既往，如果没有，你的目标是使涡轮护罩运行为真，你可以！When done and held secure,the turbine shroud should be ski
3、mmed out to 55.2mm maximum internal diameter,and the outside turned down to 58mm.Now using a nice sharp boring tool we can gingerly bore out the vanes to 37mm i/d. This is quite easily achieved and only requires that you are patient and dont take off too much at a time (0.1mm or so).Use the power fe
4、ed and aim for a few dozen cuts!当完成并保持安全性，该涡轮机外罩应脱脂出 55.2 毫米最大内部直径和外推掉到58mm.Now 使用我们可以小心翼翼孔出来的叶片来 37 毫米我/ D 转换一个很好的锋利的钻孔工具。这是很容易实现，只需要你耐心等待，不要脱掉过多的时间度（0.1mm 左右） ，使用供电和目标几十切！Keep offering up the ngv inner Part #24 to check progress and aim for a gentle sliding fit . I finish the hole by putting a ver
5、y slight ,one degree taper opening out towards the combustion chamber . This helps to stop the ngvs gripping the inner part tightly and distorting the turbine shroud .As the gas entering the ngv is always hotter (and therefore greater expansion of the vanes ) than that exiting this seems to make sen
6、se anyway it works in practice!继续提供了 NGV 内部零件编号 24，检查进度和目标温柔滑动配合。我通过把一个很轻微的，一度锥形开口，向着燃烧室完成孔。这有助于阻止 NGV 的紧紧地攥着内部和歪曲涡轮护罩，由于进入 NGV 天然气总是热的（和叶片更大，因此扩大）比退出，这似乎是有道理的反正它工作在实践中！The flange can now be squared off and trepanned out using a parting tool. Cut in 1mm or so first and keep checking on the diameter
7、as we want this to bo a nice fit into the recess in Part #22. When you have cut right through the outside diameter will be very sharp.Clean this up gently on your linisher.法兰现在可以方形和环锯出使用分割工具。切以 1mm 左右的第一和保持检查的直径，因为我们希望这啵一个很好的契合成零件编号 22 的凹处。当您的权利，通过外径切会很sharp.Clean 这件事轻轻戴在 linisher。The turbine shroud
8、 can now be gently gripped in the chuck and the rear face of the flange skimmed flat and a cleaned up. If you are concerned about weight the flange can be thinned down to about 1.5mm thickness now if required. All that now remains is to skim the outside diameter down to match your combustion chamber
9、 end-it should be 58mm. check to see and turn to fit. Any trimming should only extend far enough to enable the edge of the ngv to align with the inner face of the chamber end. 涡轮机外罩，现在可以轻轻地夹在卡盘和法兰的后表面脱脂平面和一个清理。如果您担心体重的法兰可减薄到 1.5mm 左右的厚度，如果现在需要的。现在一切仍是脱脂外径下来以匹配您的燃烧室最终它应该是 58 毫米。检查并打开，以适应。任何剪裁应只延伸得足够远
10、，以使天然气汽车的边缘，使之与所述腔室端部的内面。Leave an abutment to stop the chamber being pushed on too far. Finally turn a neat 45chamfer to aid gas flow. 离开一个邻接停止被推上太远室。终于轮到一个整洁 45chamfer 帮助气流。Drilling for the fixing screws 钻探固定螺丝The ngv can now be offered up to the rear case from the inside,and the fixing screws posi
11、tions carefully marked through from the outside.After centre drilling using a small point centre drill, the 2.5mm tapping size drill can be run through and the holes tapped for the M3 fixing screws.And thats the ngv done!该天然气汽车现在可以提供到后壳体从内侧，并固定螺丝位置的仔细从使用小点中心钻的outside.After 中心钻孔标记通过，2.5mm 的开孔尺寸钻头可以通过
12、运行和孔为挖掘 M3 的固定 screws.And 那是 NGV 完成了！The Cast NGV 中投 NGVFor many builders the cast ngv will be the main route to completion of this component.The casting may be turned at a slow speed using a nice sharp tipped tool.对于许多建设者投天然气汽车将是这个 component.The 铸造完成的主要途径可能以缓慢的速度用一个漂亮的锐利尖的工具打开。Machining the casting
13、-rear face 机械加工铸造，背面The casting should be held gently in the chuck with the turbine shroud facing outward.Check the the mounting flange is running reasonably true and adjust if necessary. The centre hole can be bored first to 20mm diameter to match the shaft tunnel, and the area around the centre ma
14、chined to the profile shown.铸件应在吸盘轻轻地举行，涡轮护罩面临 outward.Check 的安装法兰运行相当真实，必要时进行调整。该中心孔可以先钻至 20mm 直径相匹配的轴的隧道，以及围绕中心区域加工成所示的轮廓。The merest trace of material should be skimmed off the inside of the turbine shroud to make it circular, Aim for no more than 55.2mm i/d. 材料的微薄痕迹，应撇去涡轮护罩内，使其循环，目的是为不超过 55.2 毫米本
15、人/ D 转换。Carefully face off the rear face of the mounting flange and turn the outside diameter to 76mm to match the recess turned in the case rear (#22).仔细对峙的安装凸缘的后表面，并转动外径 76mm 的，以匹配接通的情况下后部（ 22）的凹槽中。The turbine shroud outside diameter will then require up to ensure concentricity with the inner and
16、to get the diameter down to 58mm.外径的涡轮机外罩然后将需要多达保证同心度与内，并获得直径降至 58 毫米。Machining the casting - front face 机械加工铸造 - 前脸The ngv can be reversed and gently gripped on the mounting flange and the inside can be ckeaned up. Check the centering and turn the combustion chamber seating to the correct length an
17、d diameter. 该 NGV 是可以逆转的，轻轻地笼罩在安装法兰和内可以 ckeaned 起来。检查定心并打开燃烧室座位到正确的长度和直径。Offer the chamber end up to check the fit-the object being to enable a smooth transition between the inside of the chamber and the ngv.提供室内最终检查是为了使该室的内部和 NGV 之间的平滑过渡装修的对象。When satisfied machine the 30sloping lead-in, both insid
18、e and out. Then machine out the recess shown to lighten up the centre section. 当满足机器的 30sloping 导入，无论内外。然后，机器显示出减仓中央部分的凹槽中。Drilling for the fixing screws 钻探固定螺丝The ngv can now be offered up to the rear case from the inside,and the fixing screws positionscarefully marked through from the outside.该天然气
19、汽车现在可以提供到后壳体从内侧，并固定螺丝位置的仔细标记通过从外部。After centre drilling using a small point centre drill, the 2.5mm tapping size drill can be run through and the holes tapped for the M3 fixing screws.用一小点中心钻中心钻后，2.5mm 的开孔尺寸钻头可以通过运行和螺纹孔为 M3 的固定螺丝。Thats the cast ngv done!这是中投 NGV 完成了！Youve worked hard so heres a pict
20、ure of Terry Lee (our draftsman) starting his MW54 下面的过程运作良好 ;Balancing the compressor 平衡压缩机The turbine is carefully removed and the bearing re-fitted to the compressor end, along with the front spacer(#2), compressor, and compressor nut. Tighten with a small tommy-bar inserted through the nut and t
21、ry to remember the feel of how much you tighten it for the future. Very gently make a couple of very small indentations in the edge of the compressor nut, and beside it in the compressor nose, to provide location marks for the future. Use a 1or 2mm round nose engraving tip held in the “Dremel”for this. If you have to remove the shaft in the future ,replace with these two marks lined up as they are now.涡轮小心取出和轴承重新装配到所述压缩机端，沿与前隔板（2） ，压缩器，压缩机和螺母。拧紧用小撬杆通过螺母插入并试图记住你多么紧对未来的感觉。轻轻地使一对非常小的凹口在压缩机螺母的边缘，并在它旁边的压缩机的鼻子，以提供位置标记为将来。使用在“德雷梅尔”这举行了 1 或 2 毫米圆鼻雕刻技巧。如果你有删除的轴在未来，更换一字排开像现在这两个标记。
