大連鑄鐵平臺(tái)主要刮研注意事項(xiàng)

時(shí)間：2016/1/16 14:01:37 瀏覽量：438

1、刮刀的形式、握法和刮法有很多種，主要由各地區(qū)各單位不同的傳統(tǒng)與習(xí)慣所形成，原則上都可以使用。不過(guò)因?yàn)槠桨宓拿娣e大，精度要求高，所以比之刮削其他工件，要特別注意下刀的均勻性。刮研刃口應(yīng)隨時(shí)修磨，經(jīng)常保持鋒利，否則，不僅操作者體力消耗很大，而且刮出的刀痕深淺不一，很難達(dá)到每25×25mm內(nèi)的點(diǎn)數(shù)要求。當(dāng)數(shù)人在不同部位刮削同一塊平板時(shí)，要有統(tǒng)一指揮和相互照應(yīng)，務(wù)求下刀深淺與刀痕大小基本一致。
2、刮削方向最好和平板邊線(xiàn)成45°左右，不宜平行，連續(xù)兩次的刮削方向垂直交叉，不可重復(fù)。
3、刮削時(shí)要看清點(diǎn)子。落刀要準(zhǔn)。不可在一處重復(fù)刮兩刀。刮削應(yīng)循一定方向依次刮去，切忌東一刀、西一刀。在全部刮完后，用毛刷把鐵屑刷去，全面檢查一遍，再統(tǒng)一補(bǔ)刮遺漏的點(diǎn)子?？傊?，既不 許重刀，又不 許遺漏，否則，每25×25mm內(nèi)的斑點(diǎn)數(shù)是很難達(dá)到合格的。
4、每次刮削后，要用經(jīng)過(guò)磨平的油石在平面上推磨一遍，倒去刮削的毛刺，防止下次拖研時(shí)劃傷平面。
5、涂色劑要調(diào)和適宜，不可過(guò)干或過(guò)稀，涂層的厚薄要均勻，否則將影響顯示質(zhì)量。粗刮時(shí)涂色層可稍厚一些。
6、當(dāng)按三面互研法刮削時(shí)，每塊平板及其四角必須編上號(hào)，以免循環(huán)拖研時(shí)因?yàn)橛洸磺宥a(chǎn)生混亂，浪費(fèi)工時(shí)。
7、平板放置應(yīng)平穩(wěn)牢固，高低適中，若支承點(diǎn)受力不均，平板工作面就會(huì)變形，而放置過(guò)高或過(guò)低，會(huì)使操作者容易疲勞。
8、必須隨時(shí)注意室溫的變化，一般在溫度升高時(shí)平面變凹，溫度降低時(shí)平面變凸，若稍不注意，就會(huì)對(duì)平面的情況作出錯(cuò)誤的判斷，以致在工作中造成混亂。
9、刮刀手柄必須有鐵箍，以防阻止因手柄開(kāi)裂使刮馬尖尾傷害操作者。
10、拖研用的平板、平尺都很笨重，在翻轉(zhuǎn)、落下和拖研的過(guò)程中，操作者要特別注意自身的安全，還要注意落下時(shí)不要讓尖角磕傷平板。在拖研過(guò)程中精神要集中，切記閑談，如果發(fā)生劃傷，會(huì)發(fā)出異常的聲響，則應(yīng)立即停止拖左，以避免劃痕擴(kuò)大。

Dalian cast iron platform main shaving considerations

1. There are many types of scraping knives, grips and scraping methods. They are mainly formed by different traditions and habits of various units in various regions. In principle, they can be used. However, because the area ofthe flat plate is large and the precision is high, it is necessary to pay special attention to the uniformity of the lower knife than scraping other workpieces. The scraping edge should be ground at any time, and always keep sharp. Otherwise, not only the operator's physical strength is very large, but also the scratches of the knife marks are different, it is difficult to reach the number of points within 25 × 25mm. When several people scrape the same plate in different parts, they must have unified command and mutual care, so that the depth of the lower knife is basically the same as the size of the knife mark.

2. The scraping direction is preferably about 45° to the edge of the flat plate. It should not be parallel. The scraping direction of two consecutive passes is perpendicular and cannot be repeated.

3, you must see the point when scraping. The knife must be accurate. Do not scrape two knives in one place. Scraping should be scraped in a certain direction, avoiding Dongyidao and Xiyidao. After all the scraping, brush the iron scraps with a brush, check it all over, and then make up the missing omissions. In short, neither heavy knife nor omission can be missed. Otherwise, the number of spots per 25 × 25 mm is difficult to achieve.

4. After each scraping, use a smoothed oil stone to grind it on the plane and pour the burrs that are scraped to prevent the plane from being scratched when the next time.

5, the coloring agent should be blended properly, not too dry or too thin, the thickness of the coating should be uniform, otherwise it will affect the display quality. The color layer can be slightly thicker when roughed.

6. When scraping according to the three-sided mutual research method, each plate and its four corners must be numbered, so as to avoid confusion and waste of working hours when the loop is being dragged.

7. The flat plate should be placed firmly and firmly, and the height should be moderate. If the support points are unevenly stressed, the flat working surface will be deformed, and if the placement is too high or too low, the operator will be easily fatigued.

8. Attention should be paid to the change of room temperature at any time. Generally, the plane becomes concave when the temperature rises, and the plane becomes convex when the temperature is lowered. If it is not noticed, it will make a wrong judgment on the plane condition, causing confusion in the work.

9. The scraper handle must have an iron hoop to prevent the operator from being scratched by the sharp end of the handle due to cracking of the handle.

10. The flatbed and flat ruler used for mowing are very heavy. In the process of turning, dropping and dragging, the operator should pay special attention to his own safety. Also, be careful not to let the sharp corner hurt the flat when falling. In the process of dragging and dropping, the spirit should be concentrated, remember to chat, if there is an abnormal sound, if it is scratched, you should stop dragging the left immediately to avoid the scratches from expanding.

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