Heating surface spikes

Heat-resistant spikes for scalding the heating surface of boiler tube panels.

The spike is cold-seated, for welding with specialized welding equipment in a protective gas environment or a ceramic ring. It has an ideal geometry and allows you to use the automatic spike feed system in the welding gun. It is made by the method of cold casting of steel. The temperature range is up to 550 degrees C.

They are used in coils of tubular furnaces, heat exchange equipment, boiler heating surfaces, etc. The pipe surface is scalded in order to increase the heat exchange area. Spiking is carried out by welding of the stud to the tube.

The surface scalding method is used in boiler production for the manufacture of steam and hot water boilers, pressure vessels, steam and hot water pipelines. It is acceptable to perform studding according to DIN or European standards. The grade of steel material for the manufacture of spikes and the density of studding screens should be selected depending on the steam pressure in the boilers.

Spikes are made of heat-resistant steel.

To increase the heat exchange area, the heating surfaces are scalded. The spikes are welded to the pipe in a staggered order and can have an annular or spiral arrangement. Spiking to be carried out by the method of stud welding of the stud to the pipe with welding by high frequency currents.

Studded pipes operate in higher temperature conditions, and steel grades 20, 12X1MF, 15X5M, 12X18N10T, etc. are used for their manufacture.

Pipe diameter 32-277 mm, length up to 12 m

Spikes are made using the technology of cold landing from a circle Ø10 – h11 GOST 7417-75 made of steel 12X1MF GOST20072-74 on a cold landing machine. The hardness of the source material according to the Brinell method: HB 145 … 180.

Stud welding is performed by specialized welding equipment in a protective gas environment or using ceramic rings. The spikes have the appropriate geometry, which allows you to use a system for feeding spikes to the welding gun.