කරාමවල අසාර්ථක අනුපාතය ඉහළ යන්නේ ඇයි??

It is reported that Shanghai has conducted random inspections on the quality of faucets, and the unqualified rate has reached 40%. What causes such a low pass rate of faucets?

This is firstly caused by technological reasons. වාර්තමානයේ දී, many daily necessities are made of copper, යකඩ, stainless steel and other materials. මෙම ද්රව්ය බැර ලෝහ මූලද්රව්ය අඩංගු වේ. If they are not handled properly, they may exceed the standard.

උදාහරණ වශයෙන්, the main elements of stainless steel include manganese, ක්රෝමියම්, සහ නිකල්. In order to maintain corrosion resistance, මල නොබැඳෙන වානේ නිශ්චිත ක්‍රෝමියම් ප්‍රමාණයක් අඩංගු විය යුතුය. If the chromium is handled improperly, it may cause excessive chromium. In the same way, improper handling of manganese may lead to excessive manganese.

The copper alloy used to make faucets contains traces of metal elements such as iron, ඇලුමිනියම්, සහ නායකත්වය. නායකත්වයක් නොමැති නම්, වාත්තු කිරීමේදී එය සෑදීමට අපහසුය. ඊයම් අන්තර්ගතය වැඩි වේ, the easier the casting process. ඒ නිසා, copper faucets on the market generally contain a certain amount of lead. If the factory does not do a good job of removing lead during manufacturing, it will cause excessive lead.

තවත් හේතුවක් වන්නේ සමාගමේ තාක්ෂණය සහ උපකරණ වයසට යාමයි, causing trace elements to be uncontrollable. සාමාන්යයෙන්, නව උපකරණ මුලින්ම නිෂ්පාදනය කරන විට, එහි නිෂ්පාදන සුදුසුකම් ලබයි, නමුත් උපකරණ දිගු කාලයක් භාවිතා කරන විට, the products will exceed the trace elements. This situation cannot be repaired from a technical point of view and can only be replaced with new equipment, but some factories continue to use it to save money. This is a technical problem and also a cost problem.

A seller of bathroom equipment told reporters that most faucets on the market now have copper cores, but the quality varies. Faucets from small manufacturers and cheaper prices are likely to exceed the lead. මෙයට හේතුව සමහර නිෂ්පාදකයින් පිරිවැය පාලනය කිරීම සඳහා සම්මත පිත්තල මිශ්‍ර ලෝහ මිලදී නොගැනීමයි, but purchase cheap lead brass as raw materials from small workshops. This kind of lead brass tends to have a high lead content, but the price is only half of the brass alloy.

මිලෙන් බාල කරාම වෙන්කර හඳුනා ගන්නේ කෙසේද?? An industry insider told reporters that a copper faucet with formal craftsmanship should cost more than one hundred yuan, while a faucet worth tens of yuan is likely to use lead brass.

“විශාල නිෂ්පාදන හා සසඳන විට, faucets worth tens of yuan are really not worth spending so much time and energy to choose one by one, සහ අධික ඊයම් අන්තර්ගතයේ ගැටලුව කෙරෙහි අවධානය යොමු නොකරනු ඇත.” A Shanghai citizen who is decorating his home told reporters.

මේ සම්බන්ධයෙන්, some people in the industry said that domestic consumers did not pay enough attention to the quality and safety of faucets, which also gave many unqualified and low-quality faucets an opportunity.