Implementation

Tecalemit’s industrial rubber hoses are either manufactured by spiral wrapping, consisting of adding the successive components of the hose on a metal mandrel, or continuously by extrusion and braiding the textile reinforcement.

Manufacture on automated mandrels

Ce type de fabrication nécessite des halls de fabrication équipés de ponts roulants d’une portée de 200 mètres.
This type of manufacturing requires factories equipped with overhead traveling cranes with a range of 200 meters.
The metal mandrel of maximum 61 m is towed inside a machine which has rotating reels used to lay the constituent elements of the pipe: Rubber strips laid in a helical manner, strips of textile or steel wires, metal spirals, transfer band bearing the Tecalemit Flexibles by Sel brand, polyethylene strip for marking the inlaid batch numbers, and finally the strips of finishing fabric which will hold the constituent elements of the pipe.
This reels turn in both directions.
The mandrel is then inserted into a 60 meter long autoclave oven for vulcanisation.
When it is removed from the oven, the finishing fabric strip is removed and the hose is removed from the mandrel.
This manufacturing process can be used with metal wire or textile thread braiding.
It also allows the association of one or several metal spirals with textile strips.
The minimum manufacturing batch is 10 mandrels. The maximum inside diameter is 152.4 mm.

Manufactured on manual and semi-automated mandrels

The operator stands on a cart, the advance of which is controlled by the rotation of the metal mandrel.
The operator lays the various strips of rubber, the textile wire layers, the metal spirals, the commercial marking and the traceability bands and the strips of finishing fabric on a metal cylinder.
This covered cylinder is then inserted in an autoclave oven.
This manufacturing technique allows for a great flexibility in the use of the various constituent elements of the hose.
The making can be done with a transfer band, incrusted, or both.
The maximum inside diameter is 508 mm.

Manufacture on flexible mandrels

This manufacturing technique allows pipes with one or several textile or metal braids to be made.
The mandrels are made of polyethylene with an internal steel wire.
The marking is done with ink, by incrustation or by transfer band.
This technique is usually reserved for hydraulic hoses but is also used when the length of the requested hoses is greater than 61 meters.
The maximum diameter is 31.8 mm.

Continuous manufacturing

This manufacturing technique can be used to extrude pipes with a diameter of up to 25 mm with a smooth surface (unlike pipes manufactured on mandrels which have a striped appearance following their vulcanisation under a strip of fabric in the autoclave).
The internal tube is extruded and immediately braided and covered in rubber with a square head extruder.
The marking is done with ink or incrusted.
The pipe is then rolled onto a revolving plate that is inserted into an autoclave oven underground.

List of the diameters of our rigid mandrels

The quantity of available mandrels in January was around 2,800.
- 61 meters mandrels for diametres (in mm): 10, 12, 12.7, 15.8, 17, 19.1 , 20, 22, 25.4, 26, 28,  30, 31.8, 35, 38, 40, 42, 44.5, 48, 50, 50.8, 53, 54, 55, 57, 60, 63.5, 65, 70, 73, 75, 76.2, 80, 83, 90, 95, 100, 101.6, 110, 114.5, 120, 127, 152.4
- Mandrels of other lengths for the diameters (in mm): 14, 15, 18, 24, 25, 25.6, 68, 85, 92, 105, 130, 133, 140, 146, 150, 162, 168, 175, 180, 190, 203, 219, 230, 245, 254, 273, 298, 304.8, 323, 336, 355.6, 390, 406.4, 445, 457, 508.
- Stainless steel mandrels to manufacture food-grade hoses (mm) : 15, 15.8, 19.1, 25.4, 31.8, 38.1, 40, 44.5, 50.8, 60, 63.5, 70, 75, 76.2, 80, 90, 101.6, 110, 114.5, 168, 203.

Standard dimensional tolerances on the inside diameter of rubber hoses manufactured on mandrels

Inside diametre in mm
Dimensional tolerances for pipes manufactured on a rigid mandrel, in mm
Manufacture on flexible mandrels 3.2 +/- 0.3 +0.50/-0.30 From 4 to 10 +/- 0.4 +0.60/-0.40 From 12 to 16 +/- 0.6 +0.70/-0.50 From 19 to 20 +/- 0.8 +0.90/-0.70 25 +/- 1.0 +0.90/-0.70 From 30 to 40 +/- 1.20 +1.20/-0.80 From 50 to 65 +/- 1.40 From 70 to 90 +/- 1.60 From 100 to 125 +/- 1.60 From 150 +/- 2.0 to 200 +/- 2.5 From 250 to 400 +/- 3.00

Manufacture of hoses fitted with connectors

Modern equipment makes it possible to carry out the various operations required for the preparation of the finished product: Cutting, boring, stripping, handling, crimping, proofing and marking.
The metal connectors and crimping skirts are produced in-house as per RCMH drawings.
A traction bench, a cyclic pulse pressure bench of 1000 bars, 150 ° C fire test and hydrostatic test of 22 meters are used to check the reliability of the assemblies.

certication AEO
Logo NF 377
Certifications DREAL
Certification Veritas
Rubber hoses
hydraulic hoses
hydraulic fittings
tubes pneumatiques