A method is executed to make a reel assembly of a tie-down. The method includes the steps of providing a ratchet with teeth and slots, providing a spool with protuberances, connecting the ratchet to the spool by inserting the protuberances of the ratchets in the slots of the spool, and enhancing the connection of the ratchet to the spool.

A method is executed to make a reel assembly of a tie-down. The method includes the steps of providing a ratchet with teeth and slots, providing a spool with protuberances, connecting the ratchet to the spool by inserting the protuberances of the ratchets in the slots of the spool, and enhancing the connection of the ratchet to the spool.

A welded joint comprising: a pair of steel base materials having a sheet thickness of 0.4 to 4.0 mm, and at least one of which has a tensile strength of 780 MPa or more; and a weld metal that welds the pair of steel base materials, wherein, when the weld metal is seen in plan view, a weld toe of the weld metal has peaks and valleys, an average distance in a direction orthogonal to a weld line direction between a top point of a peak and a bottom point of a valley that are adjacent to one another is 3.0 mm or less, and an average number of a total of peaks and valleys, at which the distance in the direction orthogonal to the weld line direction between the top point of the peak and the bottom point of the valley that are adjacent to one another is 0.1 mm to 3.0 mm, is 2 to 30/15 mm, and an automobile component having the welded joint.

A welded joint comprising: a pair of steel base materials having a sheet thickness of 0.4 to 4.0 mm, and at least one of which has a tensile strength of 780 MPa or more; and a weld metal that welds the pair of steel base materials, wherein, when the weld metal is seen in plan view, a weld toe of the weld metal has peaks and valleys, an average distance in a direction orthogonal to a weld line direction between a top point of a peak and a bottom point of a valley that are adjacent to one another is 3.0 mm or less, and an average number of a total of peaks and valleys, at which the distance in the direction orthogonal to the weld line direction between the top point of the peak and the bottom point of the valley that are adjacent to one another is 0.1 mm to 3.0 mm, is 2 to 30/15 mm, and an automobile component having the welded joint.

The invention relates to a method for welding a plurality of strands (33) of one or more electrical conductors (22), comprising at least the following steps: (a) preparing the strands (33) to be welded such that at least the free ends (22a) of adjacent strands are axially offset by a non-zero distance d. (b) melting the free ends (22a) of the strands thus arranged in order to weld them without addition of material.

The invention relates to a method for welding a plurality of strands (33) of one or more electrical conductors (22), comprising at least the following steps: (a) preparing the strands (33) to be welded such that at least the free ends (22a) of adjacent strands are axially offset by a non-zero distance d. (b) melting the free ends (22a) of the strands thus arranged in order to weld them without addition of material.

A double-wall spiral welded pipe includes a first steel belt layer and a second steel belt layer which have equal widths, are arranged in parallel and align with each other; at least two supporting steel bars perpendicular to the first steel belt layer and the second steel belt layer are arranged between the first steel belt layer and the second steel belt layer; the supporting steel bars are arranged on end parts of two sides of the first steel belt layer and the second steel belt layer and extend together with the first steel belt layer and the second steel belt layer; and the first steel belt layer, the second steel belt layer and the supporting steel bars on the end parts of the two sides are mutually welded to form a double-layer composite steel belt with a rectangular section in an extending direction.

An assembly configured to seal an end plug on a plugged end of a fuel tube is disclosed. The assembly includes a seal weld chamber assembly and a helium flow stop assembly (HFSA) removably coupled to the seal weld chamber assembly. The seal weld chamber assembly includes a welding chamber and a plunger fluidically coupled to the welding chamber. A helium source is configured to supply helium to the welding chamber. The end plug of the fuel tube is positionable within the welding chamber via the plunger. The HFSA is configured to prevent helium from escaping the welding chamber through the plunger.

An assembly configured to seal an end plug on a plugged end of a fuel tube is disclosed. The assembly includes a seal weld chamber assembly and a helium flow stop assembly (HFSA) removably coupled to the seal weld chamber assembly. The seal weld chamber assembly includes a welding chamber and a plunger fluidically coupled to the welding chamber. A helium source is configured to supply helium to the welding chamber. The end plug of the fuel tube is positionable within the welding chamber via the plunger. The HFSA is configured to prevent helium from escaping the welding chamber through the plunger.

A welding mechanism for welding different blank sections includes a welding device and a carrier. The carrier has a base, two opposite positioning members, an operating set disposed between the positioning members and driven by a power source, and a holding member and a pushing member which are respectively disposed relative to the positioning members. The blank sections, including a front section and a rear section, are separately placed on the operating set. The front section is restricted by the holding member. The pushing member pushes the rear section, so the two sections meet at a joint. When the two sections rotate synchronously along with the rotation of the operating set, the welding device welds the two sections at the joint circumferentially to produce a bi-compositional screw, thereby preventing the generation of air and pores inside the joint after welding, increasing processing quality, and reducing processing costs.