---
publication_id: "OT-2026-000000272"
title: "Method for manufacturing soldered products"
published_at: "2026-09-15T19:02:41.237232Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000272"
categories:
  - "manufacturing-assembly-equipment/joining-and-welding"
keywords:
  - "b23k3/025"
  - "b23k1/0008"
  - "b23k2101/006"
  - "b23k35/0227"
  - "b23k35/362"
---

# Method for manufacturing soldered products

## Abstract

A method for manufacturing a soldered product by soldering a solder object portion, including: a solder supplying step that causes a cylindrical soldering iron having a through hole to contact with the solder object portion to supply a thread solder piece to the solder object portion from the through hole; a heating step that heats the thread solder piece with the cylindrical soldering iron and causes to melt the thread solder piece at the solder object portion; and a curing step that cures a melting object of the thread solder piece to solder the solder object portion. The thread solder piece is composed of a core containing a flux and a coating member containing a solder alloy that covers the core. The flux has a rosin having an acid value which is substantially as a main component thereof.