In the terminal consumer market or even the wholesale market of all-copper lamps, consumers often have such an experience: every time they enter a store selling all-copper lamps, the enthusiastic business personnel will describe the all-copper lamps they operate seamlessly.
For these consumers who know little about the knowledge of all-copper lamps, it is really difficult to distinguish between good and bad.
This article makes a brief introduction on how to recognize all-copper lamps with low quality.
Judging the quality of all copper lamps is nothing more than two sides, one is the appearance, the other is the internal quality.
The appearance of the full copper lamp determines the degree of appreciation of this lamp. It is also directly felt by ordinary consumption. I will not give a detailed introduction here.
The intrinsic quality of all-copper lamps is something that consumers can't see and touch.
However, this internal quality directly affects the service life of all-copper lamps.
The fundamental factor that determines the internal quality of all-copper lamps is whether the construction technology is scientific and reasonable and whether the process standards can be implemented.
These are also difficult to describe and boring things.
In fact, we don't need to go deep into the process of whether the all-copper lamp is really durable.
Only the following two methods need to be used for testing, and the internal quality will naturally be known.
I. Test the surface adhesion of the surface layer of the all-copper lamp the surface coating of the all-copper lamp is a treatment process to prevent premature oxidation of the all-copper lamp. It is attached to the surface of the all-copper lamp. As time goes, because the surface coating itself reacts with the substances in the air, or the surface coating and the copper piece itself are not enough, the surface coating will gradually fall off.
The longer it falls off, the longer it protects the copper lamp from being oxidized by air too early, and the better the quality.
Test Method: first, use a knife to draw a small grid of 1MM * 1MM on the surface of the treated all-copper lamp fittings, and the depth is subject to the coating that can be cut. Then. Paste 3M gummed paper on)
The surface of the all-copper chandelier fitting with the cut grid is rubbed back and forth with an eraser, so that after it is completely tightly attached, it is quickly torn in the direction of 45 degrees, and the coating should not fall off.
If the visual observation cannot be clearly observed, it can be observed with a 10-fold microscope;
If there is falling metal powder and adhesive tape sticking; There is a phenomenon of metal coating peeling off; There is a phenomenon of foaming.
It can be concluded that the service life of this all-copper lamp is not long.
Two: The surface of the accessories of the copper lamp is soaked in dilute salt water or dilute hydrochloric acid. People with a little experience will know that the metal will rust in the air (The rust of copper is long copper green).
The most fundamental reason is because the metal surface reacts with salt or acid-base substances in the air.
In order to prevent the metal surface from reacting with corrosive substances in the air, we often make a coating on the copper surface to block its reaction with these substances, these characteristics will also be oxidized due to long-term contact with corrosive characteristics in the air, but their oxidation resistance life is many times stronger than that of metals.
The specific strength depends on the surface treatment process of each manufacturer.
Test Method: Add 5% salt or hydrochloric acid to ordinary tap water at normal temperature, and completely immerse the fittings of all copper lamps in the solution, after 12 small advances, there are pitting on the surface of the accessories of the all-copper lamp.
If there is, it is considered to be of low quality, otherwise it is normal.
The longer the whole copper lamp fittings react in the solution, the better the quality of the whole copper lamp.