➤ Japanese
  • TOP
  • BUSINESS OVERVIEW
  • PRODUCTS
  • GOLDSUMMIT WELDING MATERIALS

GOLDSUMMIT WELDING MATERIALS

WHAT IS GOLDSUMMIT WELDING?

In 1886, Dr. Hans Goldschmidt discovered "thermite reaction" by a combination of iron oxide and aluminum powder. This reaction utilizes strong affinity of aluminum for oxygen in order to reduce heavy metal oxide, particularly iron oxide and is a quick steelmaking and refining process by abrupt oxidized heat generation given by a reaction formula:
Fe203+2AI → 2Fe+AI203+800kJ

GOLDSUMMIT WELDING EQUIPMENT

Assembly of welding equipment
Assembly of welding equipment
Shearing device
Shearing device
To Page Top

CONSUMABLES OF GOLDSUMMIT WELDING

Thimble

Thimble

Igniter

Igniter

The portion and moulds to be used in each rail profile is as follows.

Standard rail + Standard rail Standard rail + Heat-treated rail Heat-treated rail + Heat treatment rail mould
JIS 50N rail 50N Z90 portion 50N Z90 portion 50N Z120M portion 50N for mould
JIS 60 rail 60K Z90 portion 60K Z90 portion 60K Z120M portion 60K for mould

* Thimble, Igniter are common.
* Moulds for 73kg, 74kg, 100kg crane rail are also available.

To Page Top

STEP MOULD

When damaged rail is replaced, the joint sometimes has big gap between existing worn rail and newly inserted rail. Step mould has 4mm gap and enhance workability to weld worn rail and new rail.

- Special consumable or equipment are not necessary
- Welding procedure is just the same as usual Goldsummit Welding
- Application range of standard mould and step mould are the following:

Gap of rails (mm) 0 1 2 3 4 5 6
Standard mould - - -
Step mould - -

○ : Applicable

● : Under rail head and upper rail foot of mould should be
shaved on the side of worn rail

Bottom of mould

Bottom of mould

Bottom of mould

Bottom of mould

To Page Top

WIDE-GAP WELDING

Welding gap for Wide-gap Welding is 70mm to 75mm, wider than the one of standard Goldsummit welding, whose gap size is 25mm.

Appearance of Wide-gap Welding

Appearance of Wide-gap Welding

The following consumable and equipment are different from standard Goldsummit Welding.

· Portion · Mould · Mould shoes · Universal clamping device
· Slag pan · Crucible extension ring · Shearing device · Shear blade

To Page Top