Soil filler grinding.

In pedydushchy article we considered the main soil - fillers. Let after priming process there are also some defects of unevenness of a layer, but, first, they are less expressed, than on paint owing to composition of soil filler and, secondly, before coloring it is ground. The surface becomes uniform and with a necessary roughness.
Soil filler grinding. At big shagreen leather on a surface, for grinding soil pad is recommended to choose a soft disk and the machine with the course of the clown of 3-5 mm. At manual processing with use of special devices, as that: blocks with pyleotsosy, planes, etc., it is possible to adhere to the same gradation of paper. If you work with self-made blochka or "a naked hand", then it is better to choose paper one gradation smaller. In case of work wetly for a right choice of gradation it is necessary to address the following data:

Apparently from the table, for the same type of works it is necessary to choose various gradation of paper chilly and wetly. It is caused by the fact that the structure of different types of paper has various appearance. So, by production of paper the closed type of abrasive grain wetly is used. It means that about 90% of a basis are covered with abrasive grain. At the same time for paper chilly the type of grain is open, and only 60-75% of a basis become covered with grain which, respectively is at bigger distance from each other. It is urged to provide removal from a working zone of products of grinding (grinding dust, particles of the processed product).
The success in activity of the car repair enterprises in many respects is defined by a right choice of the grinding materials applied by preparation of a surface for coloring. Therefore the sia Abrasives Holding AG company (Switzerland), being guided by modern requirements to quality and speed of performance of the preparatory operations preceding repair coloring, developed the new line of grinding wheels which received the name Siadrive.
New grinding wheels differ in aggression, high efficiency, and are intended for about a brabotka of big surfaces. The new system of dust removal for eccentric grinding machines providing long service life of abrasive materials was specially developed for work with circles of Siadrive.
The range of the Siadrive grinding wheels includes circles with a diameter of 150 mm with the 7th, the 9th (Festo standard) openings for a pyleotvod, and also circles without openings.
When performing preparation of a surface with use of circles of Siadrive the following choice of gradation is recommended:
- for removal of old LKP - P40-P80
- for processing of a zashpatlevanny surface - P80-P280
- for removal of transport soil - P280-400
- for alignment of the grounded surfaces - P360-P600
- for thin grinding before coloring - P500, R600kogda the surface will be properly from a shlifovan, we blow in dust, again obezzhir Wai and we pass to the following stage.
Masking. Speaking more simply - "pasting". The range intended for masking of not painted surfaces is rather various. The main material used for pasting is the paper gluing tape adhesive tape. What characteristics it has to possess? The adhesive tape is presented at the market by tens of various names. The qualitative tape for pasting has to have a number of the following positive features. To stick densely and strongly and to keep reliably on all types of pure and dry surfaces: metal, paint, plastic, rubber, glass, sometimes even skin and that is not less important - on own layers. The adhesive tape should not razmokat and pass not only the applied paint, but also solvents at all. Should not exfoliate when heating in a chamber or IK-drying. At removal should not leave a glue layer on a surface. And, certainly, its paper basis has to be rather strong. The fact of resistance of the pasting-over tape to water also is positive. We would recommend an adhesive tape of the CARSYSTEM trademark for use. It possesses all listed characteristics. Is issued in rolls with a standard length of 50 meters and from 19 to 50 mm wide. Other, not less important attributes of pasting are camouflage paper and a film. Paper as more dense material, is convenient for pasting of difficult apertures of a body: podkapotny space, arches of wheels, apertures of doors. The polyethylene film of the credible producers possesses high static properties, thermal stability, densely adjoins to a surface of a body and when coloring insignificant quantity of elements on the car allows to perform work on masking as fast as possible. At the same time it is necessary to pay attention to what party paper or a film adjoins to the car. Most often these materials have distinctions as the parties. And, at last, several auxiliary devices for pasting process simplification. The Porolonovy condensing rollers with a glue layer allow to isolate quickly from hit of painting fog in lateral cavities of body elements: cowl and forward wings, back doors and next face plane of back wings and many other places. At the same time the border of new paint will be smooth, stepless. And how many efforts time create densely prilegayemy contours of rubber sealants of glasses of the car, handles of doors when pasting. The Japanese cars create the greatest difficulties in this plan. It is simple to solve them the plastic condensing tape helps. Accurately unbending edge of a rubber sealant and reliably fixing it in this situation the glue layer, the condensing tape creates a sufficient gap for paint hit. The basic purpose of the described materials and devices consists in need as far as possible to minimize process of pasting on time. Sometimes it is necessary to spend in the afternoon for works on masking that then within an hour to execute all coloring. And the saving of time of the master - the most expensive element of process of repair - allows to reduce a total cost of repair most effectively. ". We will talk about actions which in any way not to carry to preparation stages. They are very important, but are so small on expenses of time and forces that their most suitable definition will be … Rituals. The present description has no them character, consecutive on time. Their purpose is simple - to reduce as much as possible probability of emergence of dirtiness, craters and other separate defects on the painted surface which fact of possible emergence often does not depend neither on perfection of a painting chamber, nor on extent of purification of air. The reason of their emergence is banal - insufficient accuracy when performing this or that operation.
And the preparation finishing in stages final cleaning of a surface obduvy is considered compressed air. And though procedure this obligatory, something ritual in its performance is present.
Final dust removal by method of an obduv is always recommended to be made at the chamber included in colourings in the mode. When performing this procedure it is necessary to look through sites of fastening of camouflage materials once again attentively. Not only the painted surface but also all the pasted-over area of the car is blown by compressed air. And first of all - the painter in all protective equipment. It is possible that the largest mote which should be soshlifovyvat from a surface of paint later and to polish this site, at the moment disappears somewhere pleated overalls or on a painting mask.
Special pylesobirayushchy napkin - the irreplaceable assistant in this procedure. However it is impossible to show excessive diligence at its use not to leave a layer of sticky substance which it is impregnated on the cleared surface. External cleaning with compressed air of a spray and the place of its fixing for filling with paint will be not so superfluous. The site of an air hose at the painting gun can need rubbing too.
So, all above described operations were performed consistently and honestly. Basic paint is prepared with the standard number of the putting solvent demanded under the terms, carefully mixed, filtered and filled in in a spray tank.
And in the following article we will tell you about technology putting basic paints.