A piston for internal combustion diesel engine having a piston diameter of 180 to 650 mm, includes a top part and a body part connectable to each other, the top part defining, when installed in a cylinder of the engine, the piston side of a combustion chamber, and the body part having an aperture for a gudgeon pin, bosses for distributing forces, when in use, between the piston and the gudgeon pin, the body part having an interior, an outer surface and operable connecting surfaces. The interior of the body part includes an interior wall having a macro geometry of wavy surface, where a wave has a length of 3 to 25 mm and a height of 0.3 to 3 mm, the wavy surface having a micro geometry measurable as a surface roughness of 5 to 9 μm.

A cold formed anchor for use in an insulated cavity wall includes a unitary body formed with a driver portion and having large and small diameter portions. The driver portion may be formed with structure for connecting a veneer tie to the anchor. A method of making the cold formed anchor includes cold forming a driver portion and a reduced diameter portion from a blank.

A cold formed anchor for use in an insulated cavity wall includes a unitary body formed with a driver portion and having large and small diameter portions. The driver portion may be formed with structure for connecting a veneer tie to the anchor. A method of making the cold formed anchor includes cold forming a driver portion and a reduced diameter portion from a blank.

Method for producing a steel part comprising providing a semi-finished product made of a steel comprising, by weight: 0.35%≤C≤0.60%; 0.15%≤Si≤0.5%; 0.8%≤Mn≤2.0%; 0.0003%≤B≤0.01%; 0.003%≤Mo≤1.0%; 1.0%≤Cr≤2.0%; 0.01%≤Ti≤0.04%; 0.003%≤N≤0.01%; S≤0.015%; P≤0.015%; 0.01%≤Ni≤1.0%; 0.01%≤Nb≤0.1%; optionally 0≤Al≤0.1%; 0≤V≤0.5%; and the remainder consisting of iron and unavoidable impurities. The method further including annealing this semi-finished product at a temperature strictly lower than the Ac1 temperature of the steel; cold forming the semi-finished product into a cold formed product; subjecting the cold formed product to a heat treatment comprising heating the cold formed product to a temperature greater than or equal to the Ac3 temperature of the steel; and holding the product at a holding temperature comprised between 300° C. and 400° C. for a time comprised between 15 minutes and 2 hours.

A cold formed anchor for use in an insulated cavity wall includes a unitary body formed with a driver portion and having large and small diameter portions. The driver portion may be formed with structure for connecting a veneer tie to the anchor. A method of making the cold formed anchor includes cold forming a driver portion and a reduced diameter portion from a blank.

One aspect is an apparatus including an additively manufactured first component and a captive nut contained within the first component for interconnecting the first component to a second component. Another aspect is an apparatus including a first additively manufactured component having a hole and a second additively manufactured component having a socket. The apparatus further includes a pin having a head engaging a surface of the first component and a shaft extending from the head through the hole in the first component and into the socket of the second component. Another aspect is an apparatus including first and second panels. The apparatus also includes a bolt having a head and a shaft extending from the head and a nut located at a distal end of the shaft. The first and seconds panels may be sandwiched between the bolt and nut to interconnect the first and second panels.

One aspect is an apparatus including an additively manufactured first component and a captive nut contained within the first component for interconnecting the first component to a second component. Another aspect is an apparatus including a first additively manufactured component having a hole and a second additively manufactured component having a socket. The apparatus further includes a pin having a head engaging a surface of the first component and a shaft extending from the head through the hole in the first component and into the socket of the second component. Another aspect is an apparatus including first and second panels. The apparatus also includes a bolt having a head and a shaft extending from the head and a nut located at a distal end of the shaft. The first and seconds panels may be sandwiched between the bolt and nut to interconnect the first and second panels.

Provided is a method for manufacturing a stainless steel ball stud for an automotive suspension system, which includes: a forging and molding step of forging and molding a cylindrical shaped stainless material blank with the same top and bottom diameters by using a progressive press machine to operate a number of mold dies simultaneously and to move a forged mold product of a preceding die to a succeeding die, to make a forged mold product; a male thread shaping step of shaping a male thread on the forged mold product; and a cutting and surface finishing/burnishing step of cutting the forged mold product by using one ball stud processing machine such that a head part is cut at exact dimensions, a neck part and a washer part are shaped and the surface finishing/burnishing work to the head part is performed to complete the stainless steel ball stud for an automotive suspension system.

A method of manufacturing a welding stud. The welding stud comprises a weldable portion of light metal and a functional portion of steel. The method comprises the steps of: providing a welding part of a light metal and partially defining a recess, providing a function part of a steel and which includes a protrusion, providing a press with a die and a punch, arranging the welding part on the die and the function part on the press such that the protrusion opposes the recess, and manufacturing the welding stud by impacting the welding part and the function part into the die by the punch such that the protrusion enters the recess and the welding portion forms a sleeve around an end of the function portion to form the welding stud with the welding part forming the weldable portion and the function part forming the functional portion.

A method of manufacturing a welding stud. The welding stud comprises a weldable portion of light metal and a functional portion of steel. The method comprises the steps of: providing a welding part of a light metal and partially defining a recess, providing a function part of a steel and which includes a protrusion, providing a press with a die and a punch, arranging the welding part on the die and the function part on the press such that the protrusion opposes the recess, and manufacturing the welding stud by impacting the welding part and the function part into the die by the punch such that the protrusion enters the recess and the welding portion forms a sleeve around an end of the function portion to form the welding stud with the welding part forming the weldable portion and the function part forming the functional portion.