A heat insulating protective member including an inorganic fiber formed body having a hollow cylindrical shape or a split hollow cylindrical shape, wherein the inorganic fiber formed body has an inner circumferential surface (c) facing a hollow and an outer circumferential surface (a) constituting an outer circumference, and the bulk density of the inorganic fiber formed body increases toward the outer circumferential surface (a).

Embodiments of the invention relate to a grate bar front section and a matching grate bar rear section and to a grate bar including the grate bar front section and/or the grate bar rear section configured such that, by releasably connecting the grate bar front section to the grate bar rear section, manufacture and maintenance costs are reduced.

Embodiments of the invention relate to a grate bar front section and a matching grate bar rear section and to a grate bar including the grate bar front section and/or the grate bar rear section configured such that, by releasably connecting the grate bar front section to the grate bar rear section, manufacture and maintenance costs are reduced.

A device for detecting transport boats includes a contact element for contacting a transport boat, and a connecting element spring mounted in a housing of the device, biased into an initial position and linearly displaceably guided via a guide of the housing. The contact element is connected to the spring mounted connecting element and is displaceable together therewith in such a way that contact of the transport boat with the contact element causes deflection of the connecting element against the bias from the initial position into a detection position. The device further includes a detection device adapted to detect reaching of the detection position by the connecting element.

A method for a laser surface treatment of furnace furniture of a heating furnace, which furnace furniture is used for the support of metal products in the heating furnace, the method including the steps of: setting a laser device to generate a laser beam of a pre-defined power, guiding the laser beam over the surface of the furnace furniture with a pre-defined velocity, such that the surface of the furnace furniture is heated locally to above its melting temperature.

A heat treatment furnace jig having a box-like frame including a rim part and a bottom part, the bottom part being removable from the rim part, and a removable net of woven strands disposed in the box-like frame and supported from below by the bottom part. The net has a triaxial weave of strands, each strand having a bundle of carbon fibers that are aligned without twisting, wherein, among the woven strands, strands of at least one direction are held by two strands in another direction, and the net is impregnated with a matrix material.

The present invention improves the strength of the bottom (net) of the jig and makes it more difficult and unlikely for deviation of the mesh to occur. A workpiece is loaded on the net (2) of the heat treat furnace jig (hereinafter, heat treatment furnace jig). In the net (2), a first strand (10), a second strand (20) and a third strand (30) are in contact at a contact point (X1). Near the contact point (X1), the second strand (20) overlaps the first strand (10) from above and the third strand (30) overlaps the first strand (10) from below. As a result, the first strand (10) is held between the second strand (20) and the third strand (30) in the up/down directions.

A skid rider button is provided for use in a steel reheating furnace to reduce gouge-type damage of a steel slab heated in the reheating furnace. The button includes a top surface defining an interface surface area to receive the steel slab to be reheated, a bottom surface couplable with a skid assembly of the reheating furnace, a front surface, a rear surface, and two opposing side surfaces positioned between the front surface and the rear surface. An overall height of the button between the bottom surface and the top surface may be reduced to lower the interface temperature of the button. The interface surface area may be increased to lower the interface temperature of the button. The button may include rounded edges between each of the surfaces to reduce the mechanical impact between the button and the steel slab.