Anti Rust 220v Circular Mould 15kw Carton Die Cutting Machine
Brand Name:AODONG
Certification:IOS9901
Model Number:AO-198
Minimum Order Quantity:1 set
Delivery Time:35 days
Payment Terms:L/C, T/T, Western Union
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Location:
Cangzhou Hebei China
Address:
tianxin building 1908 cangzhou city, hebei province, China
Supplier`s last login times:
within 41 hours
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What Are The Anti-Rust Measures For Circular Mould Die Cutting
Machine ?
What Are The Anti-Rust Measures For Circular Mould Die Cutting
Machine ?
Because more than 90% of the circular mould die-cutting machine is
made of metal products, the primary problem in production is
corrosion prevention, and metal corrosion is caused by the chemical
effect or electrochemical effect of surrounding media. According to
different media, it can be divided into atmospheric corrosion, soil
corrosion, seawater corrosion and fine bacteria corrosion. In the
meantime, atmospheric corrosion is widespread, because metal
products touch the atmosphere during processing, transportation,
storage and preservation, and there are conditions for atmospheric
corrosion in time.
The primary factor of metal rusting consists of the following
reasons:
1) relative humidity of atmosphere
At the same temperature, the percentage of water vapor content in
the atmosphere and its water vapor saturation content is called
relative humidity. Below a certain relative humidity, the corrosion
rate of metal is very small, but above this relative humidity, the
corrosion rate suddenly increases. This relative humidity is called
critical humidity. The critical humidity of many metals is between
50% and 80%, and that of steel is about 75%. Atmospheric relative
humidity has great influence on metal corrosion. When the
atmospheric humidity is higher than the critical humidity, water
film or water drops will appear on the metal surface. If harmful
impurities contained in the atmosphere dissolve the soil water film
and water drops, they will become electrolyte, which will aggravate
corrosion.
2) Temperature and humidity
The correlation between atmospheric temperature and humidity
affects metal corrosion. This has the following primary conditions:
First, the water vapor content in the atmosphere increases with the
increase of air temperature; Second, high temperature promotes
corrosion, especially in humid environment. The higher the
temperature, the faster the corrosion. When the relative humidity
is low, the influence of temperature on corrosion is not obvious,
but when the temperature is higher than the critical humidity, the
corrosion quantity increases sharply with the increase of air
temperature. In addition, if there is a temperature difference
between the atmosphere and metal, condensed water will form on the
low-temperature metal surface, which will also cause the metal to
rust.
3) Corrosive gases
Sulfur dioxide, a corrosive gas polluting the air, has a great
influence on metal corrosion, especially on steel, copper and their
alloys. Sulfur dioxide in the atmosphere mainly comes from the
burning of coal. At the same time, carbon dioxide from incineration
products also has corrosive effect. Corrosive gases are mixed in
the atmosphere around the plant. For example, hydrogen sulfide,
ammonia gas and hydrochloric acid gas are all factors that promote
metal corrosion.
The quantity increased sharply. In addition, if there is a
temperature difference between the atmosphere and metal, condensed
water will form on the low-temperature metal surface, which will
also cause the metal to rust.
4) Other elements
The atmosphere contains a lot of dust, such as smoke, coal ash,
chloride and other acid, alkali and salt particles, etc., some of
which are corrosive or condensation nuclei of water droplets, which
are also corrosion elements. For example, chloride is considered as
the ""enemy ""of metal corrosion.
Anti Rust 220v Circular Mould 15kw Carton Die Cutting Machine
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