球墨鑄鐵井蓋表層的清理工作中應該怎么做?
What should be done in cleaning the surface of nodular cast iron manhole cover?
長期性安裝后，由生鐵球墨鑄件做成的手孔遮蓋了風和太陽，因而外界當然存有塵土和空氣污染物，因而表層上看上去像塵土，刮痕和銹跡。大家應當怎樣等候并保持干凈?
After long-term installation, the hand hole made of pig iron ductile iron casting covers the wind and sun, so there are dust and air pollutants outside, so the surface looks like dust, scratches and rust. How should we wait and keep clean?
1.轉動鑄孔蓋表層的塵土；鑄鋼件下水井蓋常常在多塵的地區生產制造，空氣中常常有很多塵土，而且一直墜落在機器設備表層。能夠自來水或堿性溶液將其去除?？墒?，假如累積了塵土，則需要用髙壓水或蒸氣開展清理。
1. Rotate the dust on the surface layer of the casting hole cover; Steel casting manhole covers are often manufactured in dusty areas. There is often a lot of dust in the air, and it has been falling on the surface of machinery and equipment. It can be removed with tap water or alkaline solution. However, if dust is accumulated, it needs to be cleaned with high-pressure water or steam.
2.球墨鑄鐵井蓋表層浮粉絲或內嵌式鐵；在每一個表層上，分散鐵都是會銹蝕并浸蝕不銹鋼板。因而，務必清理掉它?？諝庵械姆勰钜话憧梢杂脡m土清理干凈。一些鍵十分堅固，務必將其視作置入鐵。除煙塵外，用一般碳素鋼鋼刷清理并且用夾層玻璃，珠串和之前用以一般碳素鋼，高合金鋼或生鐵人孔蓋等的別的耐磨材料開展拋丸除銹清理干凈。表層鐵有很多來源于。以上非球墨鑄鐵井蓋，將在蓋的周邊，而且不銹鋼板的手孔的機器設備來碾磨。假如在落料或提高全過程中不維護不銹鋼板，則工作中表層上的鍍鋅鋼絲繩，吊裝工具和鐵非常容易置入或搞臟表層。
2. Floating vermicelli or embedded iron on the surface of nodular cast iron manhole cover; On each surface, the dispersed iron will rust and etch the stainless steel plate. Therefore, be sure to clean it up. The powder in the air can generally be cleaned with dust. Some keys are very strong, so be sure to think of them as embedded iron. In addition to the smoke and dust, it shall be cleaned with a general carbon steel brush, and shot blasting shall be carried out with laminated glass, bead string and other wear-resistant materials previously used for general carbon steel, high alloy steel or pig iron manhole cover. There are many sources of surface iron. The above non ductile iron manhole cover will be milled around the cover and the hand hole of stainless steel plate. If the stainless steel plate is not maintained in the whole process of blanking or raising, the galvanized steel wire rope, hoisting tools and iron on the surface layer are very easy to be placed or dirty.
3，球墨鑄鐵井蓋上的刮痕；劃痕和別的不光滑表層務必開展機械設備清理，以避免全過程潤滑液，產品和污漬沉積。
3. Scratches on nodular cast iron manhole cover; Scratches and other non smooth surfaces must be cleaned by mechanical equipment to avoid the deposition of lubricating fluid, products and stains in the whole process.
4.球墨鑄件除銹跡；球墨鑄鐵井蓋或機器設備在生產制造以前或生產過程中很有可能銹蝕，這說明表層已被比較嚴重環境污染。在應用機器設備以前，務必清理干凈銹跡。應應用鐵或水檢測查驗完全清理的表層。
4. Rust removal of nodular graphite castings; Nodular cast iron manhole covers or machinery and equipment are likely to rust before or during production, indicating that the surface has been seriously polluted by the environment. Be sure to clean the rust before applying the machine and equipment. The completely cleaned surface shall be inspected by iron or water test.
5，精磨生產加工；切削和機械加工制造均會造成不光滑的表層，并含有例如管溝，重合和毛邊這類的缺點。每一個缺點還會繼續將金屬表層毀壞到一定程度，進而避免根據酸洗鈍化，電拋光或噴丸處理清理損傷的金屬表層 。不光滑的表層很有可能會造成 浸蝕和堆積物質。在除去再次焊接以前要解決焊接缺點，不然不能用不光滑的切削來打磨拋光過多的焊接。后面一種狀況下，務必應用細耐磨材料對其開展打磨拋光。
5. Fine grinding, production and processing; Both cutting and machining can result in an unsmooth surface and contain defects such as pipe grooves, overlap and burrs. Each defect will continue to destroy the metal surface to a certain extent, so as to avoid cleaning the damaged metal surface according to pickling passivation, electropolishing or shot peening. An unsmooth surface is likely to cause erosion and accumulation of material. Solve the welding defects before removing the re welding, otherwise you can't polish too much welding with unsmooth cutting. In the latter case, it must be polished with fine wear-resistant material.
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