suction and fire hoses can be made in several ways.Previously used arbor technology in which mandrels used a length of about 20 m - they both made several short sleeves.Operations carried out on tables equipped with capping heads, with some operations (stitching pads, rubber layers) manually.
technological process of fire (rubberized) sleeve consists of several stages: harvesting rubber chambers, preparation of fabric covers, pulling cameras cases and curing.
vulcanizing fire hoses with the help of the steam inside the sleeve.To carry out this operation, the ends of the sleeves fixed on cones vulcanizing tables.Construction cones has through channels through which steam is introduced into a sleeve or air and condensate drain.In carrying out this technique for curing hoses subject to shrinkage, therefore vulcanized pulling 10-12%.Fire hoses can also be made using a camera of the petroleum-resistant rubbers, using the cases made of synthetic fibers.
is now possible to identify the following operations with the use of which produce suction hoses :
- winding the first spiral seaming heads and the imposition of the first fabric lining,
- transfer conveyor sleeves on kleechnuyu machine,
- imposition and stitchingrubber and fabric layers,
- wrapped outer spiral seaming heads and pressing bandage and cord,
- vulcanization and then rasshnurovka, razbintovka and eat a sleeve with the mandrel.
arms production complex is constantly being improved, and labor-intensive manufacturing operations mechanized.For example, the spiral winding has been mechanized.Now, along with the table mandrel moves roller carriage with which the rotating mandrel sleeve is fed wire at the desired angle and a predetermined pitch and tension.With the same compact device carried sleeves cord, which is supplied with a rotating coil.
vulcanization suction hoses boilers use the same as for the hoses.
To take the cord and bandage with sleeves is now using special machines with a movable carriage provided with a coil for receiving cord.Take off the suction hose from the mandrel, holding one end in a vise, and the other attaching a rope electric hoist.At the same time between the sleeve and mandrel is supplied with compressed air at the same time including the work of the winch.
constantly upgraded and equipment used in the manufacture of hoses .This is increasingly being used bezdornovye production technology.
main type of quality control sleeves provide hydraulic pressure test.The most illustrative are the results of tests during which the sleeves are subjected to bends that most closely matches the operating conditions.
In monitoring the strength of the hydraulic pressure hose is determined at which the rupture of the sleeve.
Furthermore, to assess the quality sleeveless check them flexibility, resistance to temperature changes and corrosive environments.
