Undercarriage assembly components of track-type machines having a metallurgically bonded wear-resistant coating and methods for forming such coated undercarriage assembly components is taught herein. The bodies of the undercarriage assembly components, formed of an iron-based alloy, have a hard metal alloy slurry disposed on a surface or into an undercut or channel and then fused to form a metallurgical bond with the iron-based alloy. The wear-resistant coating comprises a fused, metal alloy comprising at least 60% iron, cobalt, nickel, or alloys thereof. The portion of the outer surface of the undercarriage assembly components having the wear-resistant coating corresponds to a wear surface of the component during operation of the endless track of the track-type vehicle.

A manufacturing system is provided. The manufacturing system may include a manufacturing apparatus and a dispensing apparatus. The dispensing apparatus may be configured to dispense a support material to act as a temporary fixture to support a component during manufacturing operations conducted thereon. The dispensing apparatus may dispense the support material in a liquid phase, and the support material may thereafter transition to a solid phase to support the component. After completion of the manufacturing operations, the component may be returned to the dispensing apparatus, wherein the component may be dipped in a heat transfer fluid that may cause the support material to transition back to the liquid phase for reuse. Related apparatuses and methods are also provided.

A manufacturing system is provided. The manufacturing system may include a manufacturing apparatus and a dispensing apparatus. The dispensing apparatus may be configured to dispense a support material to act as a temporary fixture to support a component during manufacturing operations conducted thereon. The dispensing apparatus may dispense the support material in a liquid phase, and the support material may thereafter transition to a solid phase to support the component. After completion of the manufacturing operations, the component may be returned to the dispensing apparatus, wherein the component may be dipped in a heat transfer fluid that may cause the support material to transition back to the liquid phase for reuse. Related apparatuses and methods are also provided.

A method of manufacturing an aluminum power transmission rail product with a metallurgically bonded stainless steel cap comprises providing molten aluminum in a tundish; providing a roll formed stainless steel wear cap; pretreating and preheating the stainless steel cap, then introducing that cap into the tundish; co-casting the aluminum and cap through one or more dies; and tensioning the stainless steel cap at an exit of the casting die and rapidly cooling the same. An aluminum-stainless composite product is also disclosed.

An article, such as a hardfaced wearpart, includes a substrate, a sheet metal shell connected to the substrate to define a cavity between the surface of the substrate and the shell, and a composite material filling the cavity and forming a coating on at least a portion of the surface of the substrate, the composite material including a hard particulate material infiltrated with a metallic brazing material. The shell may be connected to the substrate by welding or brazing to the substrate, and may wear away during use. The shell and the substrate may be used as part of an assembly for producing the article, where the shell is used as a mold for forming the composite material by filling the shell with the hard particulate material and subsequently infiltrating with the brazing material.

A molding machine cylinder comprising a lining layer having a structure comprising 20-50% by area of tungsten carbide particles and 1-10% by area of tungsten-based metal carboboride particles in a nickel-based alloy matrix, and containing 1-7.5% by mass of Fe, can be produced by a centrifugal casting method comprising a first step of heating at higher than 1140 C. and lower than 1200 C., and a second step of heating at 1080-1140 C. after melting the raw material powder.

A sliding member includes a base material and an alloy layer that includes Cu as a main component and Bi and having a sliding surface formed on a side opposite to the base material. The alloy layer has a first region and a second region. The first region is set to a region taking up 30% of the thickness of the alloy layer which is from an interface in contact with the base material toward the sliding surface. The second region is set to a region taking up 10% of the thickness of the alloy layer which is from the sliding surface toward the base material. A larger number of Bi phases having larger cross-sectional areas are distributed in an arbitrary observation cross section as Bi phases included in the second region compared to Bi phases included in the first region.

A sliding member includes a base material and an alloy layer that includes Cu as a main component and Bi and having a sliding surface formed on a side opposite to the base material. The alloy layer has a first region and a second region. The first region is set to a region taking up 30% of the thickness of the alloy layer which is from an interface in contact with the base material toward the sliding surface. The second region is set to a region taking up 10% of the thickness of the alloy layer which is from the sliding surface toward the base material. A larger number of Bi phases having larger cross-sectional areas are distributed in an arbitrary observation cross section as Bi phases included in the second region compared to Bi phases included in the first region.

Exemplary articles may comprise a surface alloyed layer, a base metal comprising a steel, and a transitional layer between the surfaced alloyed layer and the base metal. The surface alloyed layer may comprise nickel (Ni), chromium (Cr), manganese (Mn), molybdenum (Mo), silicon (Si), or combinations thereof. Exemplary methods of making an article may comprise coating a portion of a sand mold with a metal slurry, pouring a molten steel alloy onto the sand mold, and removing the article from the sand mold.

A protection method, protects at least one hollow internal area of a turbine engine part made of a superalloy from oxidation and/or corrosion, wherein the at least one hollow inner area has been formed by means of at least one core made of a ceramic material limited by an external surface that surrounds it. Before bringing the superalloy around the core made of a ceramic material, the external surface is coated with a material that includes a nanometric layer of hafnium (Hf), and/or a micrometric layer of platinum (Pt), or mixture at least of hafnium and platinum.