Submerged round caps for wind turbines

sturdy
Simple assembly and disassembly
Onshore and offshore use
Large number of available tools
Export variants US and Europe

Type of execution

Tolerances:

Inner length (H): +/- 2.00 mm
Wall thickness* (s): +/- 0.25 mm

* In order to be able to produce round caps made of soft PVC reliably, we require minimum wall thicknesses of 1.7 to 2.0 mm, depending on the inner length.

Article features

We only use soft PVC from the Covytec ® material series for the production of round caps.
Customised production mostly in approx. 68° Shore A or approx. 82 Shore A
Realisable wall thicknesses from 1.7 to 5.0 mm
Existing tools with diameters from 30 to currently 51 mm
Colour black
Onshore and offshore use
Clean and safe thanks to the absence of saline heat transfer media
US export variant F&DA compliant

The use of dipped round caps to protect anchor bolts, threaded rods and fastening screws during the construction, repowering and dismantling of wind turbines offers two major advantages.

PVC cover caps enable a quick and Easy to assemble / disassemble and protect the fastening elements reliable before Weather influences, soiling and damage.
PVC protective caps effectively reduce the risk of injury for the assembly teams caused by unprotected, sharp-edged and protruding fastening elements.
HAMCO manufactures and supplies within a few weeks field-tested protective caps to the construction sites of the construction companies and subcontractors of the wind turbine manufacturers such as Vestas, Siemens Gamesa, who are commissioned with the foundation work and provision of the anchor cages.
HAMCO offers a large selection of different diameters, usable lengths and wall thicknesses from existing tools.

Process description - Production of PVC round caps for wind turbines using the dipping process

The production of round protective caps using the dip moulding process is economically very interesting. In contrast to injection moulding, only simple and therefore inexpensive dipping tools are required for production. The dipping moulds are heated in an oven and dipped into a bath of liquid PVC. When the hot moulding tool comes into contact with the PVC paste, also known as plastisol, a thin skin initially forms on the outer contour of the round cores, which develops into the desired wall thickness of the round caps by the end of a defined dwell time in the dipping bath.
The wall thickness to be achieved depends on the temperature of the mould, the dwell time of the mould in the dip tank and the viscosity of the PVC material. The minimum wall thickness required depends on the internal length of the cap, which in turn is controlled by the immersion depth of the mould cores.
After removing the dipping mould from the dipping bath, the excess PVC material runs and drips off, whereby flow marks and drop formation at the closed end of the rectangular caps cannot be avoided.

The multi-cavity mould with the PVC layer is then heated again to achieve the rubber-elastic properties of the PVC material. This work step is often referred to as gelling.

After cooling, the round caps are manually removed from the cores using an auxiliary tool.

Residue-free from heat transfer media

Our PVC dipped parts are manufactured with a salt-free heat transfer system - completely without lithium nitrate or potassium nitrate - for Maximum purity and safety. The result is particularly clean, dimensionally stable and durable PVC dipped parts and PVC coatings that meet the highest quality requirements - manufactured in an environmentally friendly way, with improved occupational safety and easier disposal.

Material

The standard soft PVC used by HAMCO from the Covytec® material series, which is mainly processed in 68 Shore A, but also in other degrees of hardness, has good stability against UV and weathering influences in the colour black.

The phthalate-free and F&DA-compliant formulations of Covytec® 9977 BIO and Covytec 1649 ORGANIC permit the import and use of the round caps in the US market.

Important quality information

The Wall thickness is measured non-destructively at the open end of the cap. Due to the process, it increases continuously towards the closed end of the immersed caps. Drain marks and drain drops At the closed end, they cannot be completely avoided due to the nature of the process.

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Product table

	Inside Ø [mm]	Standard height H [mm]	Height H min. [mm]	Height H max. [mm]
RD - Cap	30	50	35	580
RD - Cap	32	50	35	420
RD - Cap	33	50	35	400
RD - Cap	35	50	35	500
RD - Cap	36	50	35	350
RD - Cap	38	50	35	400
RD - Cap	39	50	35	400
RD - Cap	40	50	35	350
RD - Cap	41	50	35	350
RD - Cap	42	50	35	520
RD - Cap	45	50	35	500
RD - Cap	48	50	35	310
RD - Cap	49	50	35	400
RD - Cap	51	50	35	400

Submerged round caps for wind turbines - Enquire now

Supplier to the industry

Large and small quantity requirements Direct processing

Supplier to the technical trade

Large and small quantity requirements

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