| 摘要 |
The present invention relates to a lead-free brass lump which is capable of preventing environmental pollution and the waste of resources since metal scrap which is wasted can be recycled for a valve, a water gauge, and a faucet, and a method for manufacturing the same. Metal melt where wasted metal scrap is melted include copper (Cu), zinc (Zn), tin (Sn), aluminum (Al), and phosphorus (P) as main components, and almost zero of lead (Pb), manganese (Mn), iron (Fe), nickel (Ni), silicon (Si), magnesium (Mg), chrome (Cr), arsenic (As), antimony (Sb), bismuth (Bi), cobalt (Co), sulfur (S), and boron (B), etc., which should be contained in the metal scrap being recycled. [Reference numerals] (S10) Obtain metal melt by melting metal scrap; (S10+1) Analyze components of the metal melt and control the content; (S20) Mass-produce a lead-free brass lump by using the metal melt |
