Detailed analysis and introduction of technical description of pneumatic lifting rod products

Time：2020-07-24 View：

The commonly used lifting rod is a multi-section telescopic rod with cylinder as the core independently developed by our company. This product is characterized by multi-section synchronous scaling, high load, high adaptability, low failure rate, low shaking rate, etc. It can replace hydraulic pressure, screw rod and other telescopic devices, in lifting, lifting, the erection field has a very broad application prospect.
Widely used in military communication, missile, radar antenna lifting device; Public security security lifting monitoring; Fire night emergency lighting; Mobile lifting lightning arrester; Lifting, lifting equipment, etc.
1. Cylinder material-aluminum alloy 6063-T5
Model: 6063 aluminum alloy
The main alloy elements are magnesium and silicon, which have excellent processing performance, excellent weldability, extrusion and electroplating property, good corrosion resistance and toughness, easy polishing and coloring film, it is a typical extrusion alloy with excellent anodic oxidation effect. 6063 aluminum alloy profiles are widely used in building profiles, irrigation pipes, due to their good plasticity, moderate heat treatment strength, good welding performance, gorgeous surface color after anodic oxidation treatment, etc, pipes, rods and profiles for vehicles, bench, furniture, lifts, fences, etc.
The density of 6063 is 2.69g/cm3
6063 chemical composition: iron (Fe)0.35
Manganese (Mn)0.1
Magnesium (Mg)0.45~0.9
Silicon (Si)0.2~0.3
Zinc (Zn)0.1
Titanium (Ti)0.1
Chromium (Cr)0.1
Copper (Cu)0.1
Aluminum (Al) residual heat treatment code-(name)
T1 -- artificial aging
T2 -- annealing
T4 -- solid solution treatment and natural aging
T5 -- solid solution treatment plus incomplete manual aging
T6 -- solid solution treatment plus full manual aging
T7 -- solid solution treatment and stabilization treatment
Solid solution treatment: refers to the heat treatment process of heating the alloy to the high temperature single-phase zone and keeping the temperature constant, so that the excess phase can be fully dissolved in the solid solution and then quickly cooled (water cooled) to obtain the supersaturated solid solution.
Incomplete artificial aging: adopt relatively low aging temperature or relatively short heat preservation time to obtain excellent comprehensive mechanical properties, that is, obtain relatively high strength, good plasticity and toughness, however, the corrosion resistance may be relatively low.
Complete artificial aging: higher aging temperature and longer insulation time are adopted to obtain the maximum hardness and the highest tensile strength, but the elongation is relatively low.
Stabilization treatment: heat treatment to keep the shape and size changes of the workpiece within the specified range under the condition of long-term service.

2. Sealing material-nitrile rubber
Name: nitrile rubber; acrylonitrile-butadiene rubber
Properties: a class of synthetic rubber prepared by emulsion polymerization of butadiene and acrylonitrile. The appearance is light yellow solid with a relative density of 0.91~0.986. Acrylonitrile is randomly distributed in the molecular chain and belongs to non-crystalline rubber.
Nitrile rubber is a kind of rubber with excellent oil resistance and heat resistance. Due to the existence of polar nitrile groups in its structure, non-polar or weak polar mineral oil, animal and vegetable oil, both fuel oil and solvent have high stability. Nitrile rubber has a wide application temperature range and can be used for a long time in air at 120℃. The oil resistance and heat resistance of nitrile rubber increase with the increase of its acrylonitrile content, but the cold resistance, wear resistance and elasticity of rubber decrease with the increase of acrylonitrile content. There are more than 320 varieties and grades of nitrile rubber, which can be divided according to the content of bound acrylonitrile: 42% ~ 46% is extremely high nitrile, 36% ~ 41% is high nitrile, 31% ~ 35% is medium and high nitrile, 25% ~ 30% is medium nitrile and below 25% is low nitrile 5 grades. According to the polymerization temperature: high temperature polymerization of nitrile rubber, potassium persulfate as initiator, polymerization temperature of 30 ~ 500℃, also known as hard nitrile rubber; Low temperature polymerization of nitrile rubber, using isopropyl hydrogen peroxide-sodium ethylenediamine tetraacetate-ferrous sulfate-carved powder as initiator, the polymerization temperature is 5 ~ 100℃, which is also called soft nitrile rubber. The quality and processing performance of soft nitrile rubber are better than those of hard nitrile rubber. There are also methods to classify according to the size of money value, physical state and antioxidant, etc. Nitrile rubber is mainly used to manufacture oil-resistant rubber products, widely used in molding products, extrusion products, sponge products, asbestos products, industrial rubber rolls, oil-resistant rubber shoes, wires and cables, mountant, plasticizer and building materials.

3. Anti-corrosion performance-hard anodic oxidation
Hard anodic oxidation of aluminum and aluminum alloy
The process of forming an oxide film on the anode of aluminum and its alloy in the corresponding electrolyte under specific working conditions and under the action of external current is called anodic oxidation.
After hard oxidation, the surface of aluminum and aluminum alloy has higher hardness, film thickness, abrasion resistance and corrosion resistance.
There are mainly the following differences between aluminum and aluminum alloy hard anodic oxidation and ordinary anodic oxidation surface oxidation film:
Hard anodic oxidation ordinary anodic oxidation (taking 6061 as an example)
Hardness of oxide film HV ≥ 400 HV<300
Oxide film thickness> 30um-200um 10um
The color characteristics are most suitable for brown, black and easy to wear all kinds of colors
According to the surface requirements of different aluminum products, different oxidation processes are selected. If only the surface decoration requirements, choose ordinary anodic oxidation; If the requirements of product surface hardness and wear resistance are emphasized, choose hard anodic oxidation. Compared with copper alloy, aluminum alloy weighs only 1/3, and some hard oxidation aluminum products can replace copper, which can greatly save the material cost and have a long service life at the same time.