At forging preparation in an external part of a bend is extended, and with internal — is compressed and flattened. On behr bmw parts and flattening all methods applied to formation of metal without removal of a shaving are based. Many metals in a cold condition soft and ковкие, for example gold, silver, copper, a brass, tin and aluminium. These metals behr bmw parts at processing by a hammer can be flattened out to (be extended), not losing the durability.
At forging the cross-section section of preparation decreases, and at a deposit — increases. During time протяжки and deposits owing to numerous blows Fix-A-Dent Auto Body of a hammer metal becomes fragile, and there is a danger of rupture of metal. Therefore from time to time metal warm up and pickle.
Formation soft
Metal considerably will improve as a result of heating. Such hot ковка is a forge work during which time to the heated piece of iron on an anvil powerful blows of a hammer form. Details about dispersal and cold forging are resulted in following subsection.
Hammer and linings (substrate)
Influence of blow of a hammer on metal depends on quality of a substrate and hardness of a hammer
Firm substrate — a firm hammer. If the hammer is firmer than preparation at blow metal disperses in the parties, its cross-section is flattened out, extended also
in a blow place decreases. For example, the metal sheet lays on a firm surface of an anvil and it process a metalwork hammer, боек which also is executed from the tempered steel.
Soft substrate — a firm hammer. If the substrate is softer than a hammer and preparation at blow by a hammer metal is flattened out not in the parties, and in a direction of a soft substrate. It is especially convenient at repair of metal products with Fix-A-Dent Auto Body dents. Thus air under a dent is especially soft lining. At blow by a hammer on a dent — for thin (automobile) steel sheets the hammer from an artificial material varis bmw parts suffices — metal is flattened out in a direction of a soft lining, i.e. Air. In such a way level metal sheets.
By the same principle make разгонку. When a hammer with firm brisk (metalwork, разгонным a hammer) strike on equal sheet of metal on a blow place varis bmw parts there is a deepening if a lining on which preparation lays, soft (for example, the lead plate or wooden брусок). Under the further blows of a hammer the metal sheet in a blow place is extended.
Firm substrate — a soft hammer. If the substrate is firmer than preparation, and the hammer is softer than preparation blows of a hammer it can be flattened parts foe bmw out and extended. Energy of blow partially comes back in a soft hammer.
Such way apply to straightening of the bent metal sheets. While air is under a dent, the metal sheet is exposed разгонке and is parts foe bmw straightened, and after straightening blows cannot deform preparation any more.
Рихтовка and straightening Рихтовка is an elimination of the undesirable deformations which have arisen, for example, at transportation, inept Fix-A-Dent Auto Body storage or at excessive loadings. Such deformations are inevitable at some kinds of metal working,
For example a curvature of metal sheets during welding or at cutting. Рихтовку make mechanically by means of a hammer or by means of clamps and a vice for отгибки, and also thermal way — a flame torches.
The bent metal sheets. Thin sheets of metal are corrected by means of a wooden, rubber or synthetic hammer. Begin with blows on bmw suspension parts the centre, and then move on a diagonal to an angular zone, as is shown in 51. Blows should be uniform and not strained. It is necessary to avoid double blows in the same place.
Metal plates with dents. Such plates stack a dent up on a smooth firm lining and a hammer strike on a dent. To this purpose apply a wooden, rubber or synthetic hammer, as it should be softer some straightened metal to avoid new deformations. Thanks to bmw salvage parts hammer blows occurs разгонка metal and the dent disappears. When the plate contacts lined, blows should be stopped, differently on this place there will be a metal stretching.
On the same method eliminate deformations in convex sheets of metal. More often this method apply to straightening of the damaged bmw replacement parts automobile bodies. As linings use various бойки (support), i.e. Steel Fix-A-Dent Auto Body tools with a firm and convex surface. Them keep one hand under metal sheet, and other hand strike on sheet a hammer.
Other method of straightening consists in that by means of a hammer to strike on metal on a spiral round camber, using thus a bmw replacement parts combination «a firm substrate — a firm hammer» (see above). The further from camber make blows, the they should be stronger. At use of the given method in no event it is impossible to beat a hammer on camber.
Very big cambers in metal sheets are good for eliminating by means of a flame сварочной torches. A zone round camber top warm up also metal here it is extended, that leads усадке metal in a place. The part of preparation which bmw auto parts was extended owing to heating, after cooling starts to be compressed. Thus under the influence of a flame deformation сначале amplifies, but after cooling disappears. For confident use of this method it is necessary to save up some experience.
Рихтовка sheet iron. The bent products the convex party stack on a firm substrate and straighten by means of a hammer. On small products the parts for bmw cars deformed place straighten by means of a vice.
The braided cores clamp in a vice, seize suitable pincers or, for example, bmw replacement parts and straighten preparation. Heating up a bend place, it is possible to facilitate considerably.
No comments:
Post a Comment