Method for manufacturing of pipe

FIELD: construction.

SUBSTANCE: invention is related to the field of pipes production from composite materials. In method for production of pipe, including installation of polymer pipe on mandrel, arrangement of primer layer on it, winding of fibrous material with binder and polymerisation, after installation of polymer pipe onto mandrel its surface layer is heated till yield state, and primer layer is arranged on it by means of woven cellular material winding on it, and then fibrous material is wound with binder and polymerised.

EFFECT: improved reliability.

1 dwg

 

The invention relates to the field of pipes made of composite materials.

A known method of manufacturing a pipe, including installation on a mandrel of a polymeric pipe, run it primerno layer winding a fibrous material with a binder and a polymerization - patent RU 2150629 C1, F16L 9/12, B29D 23/00, publ. 2000.06.10.

This method according to their characteristics and the achieved result closest to the proposed and adopted for the prototype.

Execution primerno layer in this method is carried out by applying to the polymeric pipe Sevillana (copolymer of ethylene and vinyl acetate).

The disadvantage of this method is its low reliability due to low adhesion properties sevelina in connection with the adjacent layers of tube to be produced as a polymer, and composite.

The objective of the invention is to improve the reliability of the method.

This problem is solved by the improved method of manufacture of pipes, including installation on a mandrel of a polymeric pipe, run it primerno layer winding a fibrous material with a binder and polymerization.

The improvement is that after installation, the mandrel polymer tube is heated its surface layer to a state of fluidity and perform on it the primer layer by winding a woven mesh material, and then perform the winding Volosnikov the material with a binder and polymerization.

Install the mandrel polymer pipe, the heating of its surface layer to a state of fluidity and run it primerno layer by winding a woven mesh material allows to introduce the latest in the winding process in the body of the polymeric pipe.

The subsequent winding of fibrous material with a binder and curing allow the binder to impregnate a woven mesh material and to form from them a single composite material with high mechanical adhesion between a plastic pipe and increasing the capacity of pipe in General, due to the woven material primerno layer, and thereby to improve the reliability of the method.

Below, with reference to the accompanying drawing, a description of the proposed method.

A method of manufacturing a pipe involves the installation of the mandrel 1 polymer tube 2, the execution of it primerno layer, the winding of fibrous material 3 with the connecting and polymerization.

The method is characterized in that after installation, the mandrel 1 polymer tube 2 is heated its surface layer And the yield condition and perform on it the primer layer by winding a woven mesh material 4 on the hot layer And that helped in the winding process to implement woven mesh material 4 (for example, half of its thickness) in the body of the polymer tube 2. Then perform Aut winding fiber material 3 with binding and polymerization (which is allowed to impregnate a woven mesh material binder and to form a single composite material of the him and the fibrous material at elevated mechanical clutch woven material with a polymeric tube).

A method of manufacturing a pipe (due to increased adhesion primerno layer with matched and simultaneously providing increased bearing capacity of the resulting pipe) is compared with the prototype improved reliability.

A method of manufacturing a pipe, including installation on a mandrel of a polymeric pipe, run it primerno layer winding a fibrous material with a binder and polymerization, characterized in that after installation, the mandrel polymer tube is heated its surface layer to a state of fluidity and perform on it the primer layer by winding a woven mesh material, and then perform the winding of fibrous material with a binder and polymerization.



 

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