CLASSIFICATION of PROCESSING of WOOD
First of all, it is necessary to notice that wood machining is divided into two principal views: primary and secondary.
Primary wood preprocessing consists in manufacture round, chipped and wood materials, and also half-finished products at sawing and plywood factories (boards, plywood, bar and etc.
Secondary processing of wood is carried out at the enterprises for release of finished articles.
The basic signs of preprocessing of wood: raw materials is the round wood material - logs, ranges, boards, bars, plywood, plates which then are used at secondary processing.write my paper;write my paper;essays for sale
The basic signs of secondary processing of wood: raw materials is preprocessing production (boards, bars, plywood, plates and etc.), used for manufacturing of finished articles (furniture, doors, skis, butts, joiner's products and etc.).

Secondary processing of wood
From a warehouse in to the shop arrives raw materials in manufacture in the form of boards, plywood, preparations, is sawn on machine tools for cross-section and longitudinal sawing up. The raskrojnyj shop takes place in a separate building in order to avoid a contamination of the general premise a considerable quantity of scraps and laths.
In a warehouse of dry materials forest products are maintained for alignment in them of humidity and removal of pressure. Term of endurance from 5 till 10 days. The warehouse area is approximately equal to the area of dryers.
In machine shop details from a warehouse of dry materials for definitive registration, giving of a corresponding profile by it on length, width and a thickness on round drank, planing, drilling or grooving strikes, depending on the form and a detail profile arrive.
At the details which are subject to pasting in boards, plane edges, sometimes and the authorities, and them direct for stick together branch.
In kleilno-fanerovalnom branch, besides pasting of boards, pasting of details and knots строганой by plywood - veneering is made. Processing of knots is made or in machine shop, or in assembly where there is a necessary equipment: round drank and milling machine tools.
Knots and details go a pas a warehouse of half-finished products for acquisition.
In assembly shop of a detail and knots in a ready kind arrive from an intermediate warehouse. In assembly shop assemblage from details and separate knots of finished articles is made. Sometimes in the same shop collect separate knots from details.
In a finishing shop the finished article or knots subject to furnish. Definitive furnish of products from wood gives them beautiful appearance and increases their durability. Furnish includes following operations: a first coat, colouring, varnishing, imitation. The finished article goes to a warehouse of finished articles and from a warehouse is taken out to a trading network or to the consumer.
At the enterprises of machining of wood there should be following warehouses:
a) raw materials warehouse,
b) warehouse of dry forest products,
c) warehouses of technical materials,
d) intermediate warehouses of details and products and warehouses of finished articles.
Under normal conditions enterprise works in a warehouse of raw materials the stock of saw-timbers pays off for 1,5-2 months of continuous work. The territory of a warehouse of dry materials should equal the area occupied сушильными with chambers of the enterprise. Provided that in a warehouse of dry materials it is possible to sustain well a material after drying.
Intermediate warehouses on the area are established at the rate of maintenance with half-finished products of the subsequent links of technology, approximately 3-10 changes. The finished goods warehouse should be such that in it was possible to place production which has been let out for 10 15 days.
With a view of increase of physicomechanical properties and quality of wood forest products preliminary are exposed to artificial drying natural silt.
The wood which has been dried up to certain degree of humidity, differs durability, ease of processing, a volume and form constancy, heat conductivity, in smaller weight, durability.
In the course of drying moisture content in forest products depending on requirements is possible to 6-20 % in relation to weight absolutely a seasoned wood.
Practically depending on degree of mechanisation and volumes of output the scheme of sequence of processing can change. Drying can be made in boards or details. On occasion forest products are used without artificial drying or manufacture is organised on the basis of received dry details and preparations.
Not always there is a necessity for separate shops. At receipt прирезных details - preparations of procuring shop can and not to be. The assembly shop is not necessary, if products do not gather. A finishing shop can not be, if products do not get off.
The warehouse of finished articles is not obligatory when the made products arrive directly to the consumer. In this case the warehouse is created all on a daily stock.
The specified deviations can take place only by special manufactures. Normally organised enterprises for wood machining have all listed shop. Besides, in a number of manufactures are available shop on wood steaming preparations, etc.