We mainly focus on stainless steel barrels and accessories. Today, we will introduce the material of metal waterproof cover, tinplate.
Tinplate, also known as SPTE, is a cold-rolled thin steel plate with a thin layer of metal tin on its surface. It has a certain strength and hardness, good formability and easy welding, and the tin layer is non-toxic and odorless, with a bright surface. Tin mainly acts to prevent corrosion and rust. It is a steel product with a thin stamped steel plate as the base and tin plated on its surface, with multiple layers of protective film. It has the characteristics of corrosion resistance, non-toxicity, odorlessness, surface gloss, light weight, high strength (compared to paper, wood, composite materials), easy printing, welding, processing and shaping, and strong adaptability to environmental temperature. Therefore, more than 70% of the total production of tinplate is used for food and beverage packaging.
The main characteristic of tinplate is the dual performance of electrochemical cathode and anode protection of its tin layer. That is, in the inner wall of a food can with a complex mixture (or weak acid electrolyte) and a certain vacuum, the potential of the tinplate layer is lower than that of the iron base material. The tin is anode, and its dissolution protects the iron. During the effective period of the food can, the dissolution of tin is basically harmless to the human body. On the outer wall of the can in the atmosphere electrolyte, the tinplate layer also exhibits cathodic protection, with sufficient chemical stability, which is incomparable to other can making materials.
There are two production methods: hot dipping and electroplating. The hot-dipping method has a thicker and uneven tinplate layer, and the thickness of the coating is difficult to control. It consumes more tin and has low efficiency, so its application is limited and gradually replaced by electroplating. Electroplating uses electroplating technology to uniformly plate the steel plate substrate with tin film. It has high productivity, low cost, thin and uniform coating, and can produce different thicknesses of coating. It can also be single-sided or double-sided plating. The main electroplating methods are alkaline electroplating, sulfate electroplating, halogen electroplating, and borofluoric acid electroplating.
Types de fermeture de tambour Gasket2July 1, 20224. le caoutchouc de fluor d'étiton scellant la résistance à haute température est meilleure que le caoutchouc de silicone, a l'excellente résistance aux intempéries, la résistance à l'ozone et la résistance chimique, la résistance au froid est mauvaise.view
Anticipation la semaine prochaine du prix de l'acierJuly 1, 2022En général, le choc des prix du marché intérieur de l'acier dans son ensemble est fort cette semaine. Tout d'abord, du côté de l'offre, à court terme sous l'influence de macrofacteurs ne peut pas paraître évident su...view
The Most trtringent «Power And Production Restriction Order» Strike bactériard!June 30, 2022Récemment, de nombreuses grandes provinces de fabrication et de matières premières ont mis de l'avant des politiques de restriction de puissance au nom du contrôle du carbone, exigeant que la capacité de l'usine soit réduite de 20%. Depuis le s...view
Vérifiez votre solidité! Steel Margins On ourourse o o onontract By 2022July 1, 2022Ececovering de la nouvelle pandémie de covid-19 et de la demande refoulée a entraîné une flambée des prix de l'acier à un rythme plus rapide que les matières premières, apportant ainsi d'énormes profits aux sidérurgistes. In 2021, l'écart entre...view