CN103468362B - Cold-rolling lubricant for lead and lead alloy foils - Google Patents

Abstract

A cold-rolling lubricant for lead and its alloy foils, using No. 5 total loss system oil as the base oil, combined with various compound additives. Including anti-wear agent, oily agent, antioxidant, anti-foaming agent, anti-emulsifier, metal deactivator, etc. The base oil has a short carbon chain, low aromatics, low sulfur content, low viscosity, large heat capacity, strong cooling and cleaning capabilities; at the same time, it can also improve the process lubrication performance, increase the strength of the oil film in the deformation zone, and reduce the friction coefficient; Composition and performance Stable; non-corrosive to metals and equipment; non-toxic, non-irritating odor.

Description

Lubricant for cold rolling of lead and its alloy foil

technical field

The invention belongs to the field of lubricant for cold rolling of lead and its alloy foil.

Background technique

Lead is a bluish, silvery-white heavy metal that is toxic and a malleable main group metal. Density 11.3437g/cm ³ , hardness 1.5, melting point 327.502°C, boiling point 1740°C, soft texture, low tensile strength. Lead without an oxide layer is bright in color, high in density, very low in hardness, and highly extensible. An important use of metallic lead is to make batteries. Its electrical conductivity is relatively low and its corrosion resistance is high, so it is often used as a container for highly corrosive substances such as sulfuric acid. Adding a small amount of antimony or other metals can further improve its corrosion resistance. The tensile strength of lead alloy is 3~7kgf/mm ² , which is much lower than most metal alloys. Antimony is one of the important elements used to strengthen the matrix. It is only partially dissolved in lead and can be used for both solid solution strengthening and aging strengthening. However, if the content is too high, the toughness and corrosion resistance of the lead alloy will be reduced. bad. Considering comprehensive performance, when lead alloys are used to make corrosion-resistant components such as chemical equipment and pipelines, it is better to contain about 6% antimony; when used to make connecting components, it is better to contain 8% to 10% antimony. Adding a small amount of copper, arsenic, silver, calcium, tellurium, etc. to lead-antimony alloy can increase the strength, which is called hard lead. Lead alloys are not easily penetrated by X and gamma rays, and can be used as protective materials for radioactive work.

The deformation resistance of lead alloy is small, and the ingot can be made into plates, strips, pipes, rods and wires by rolling, extrusion and other processes without heating, and no intermediate annealing treatment is required. Due to the low shear and creep strength of lead alloys, under certain load and rolling shear, lead alloys are easily deformed and thinned into foils; and lead alloys have good self-lubrication, running-in and shock absorption properties, Low noise, so it is a good bearing alloy. Lead-based bearing alloys and tin-based bearing alloys are collectively called Babbitt alloys, which can be used to make high-load locomotive bearings.

In the lead foil rolling process, it is required to reduce the adhesion between the rolled piece and the roll. Due to the high requirements on the surface of the lead foil material, the rolling of the lead foil material to the last few rolls has been carried out by pressure, and the thickness of the lead foil is mainly adjusted by the rolling speed, tension and rolling oil. Lubricants require base oils with short carbon chains, low aromatics, low sulfur content, low viscosity, large heat capacity, strong cooling and cleaning capabilities; at the same time, they can improve the process lubrication performance, increase the strength of the oil film in the deformation zone, and reduce the friction coefficient; Composition and performance are stable; no corrosion to metals and equipment; no toxicity, no irritating smell.

Contents of the invention

The technical problem to be solved by the present invention is to provide a base oil with short carbon chain, low aromatics, low sulfur content, low viscosity, large heat capacity, strong cooling and cleaning ability; at the same time, it can also improve the lubricating performance of the process and increase the deformation zone Inner oil film strength, lower friction coefficient; stable composition and performance; non-corrosive to metals and equipment; non-toxic, non-pungent odor-free lubricant for cold rolling of lead and its alloy foils.

The present invention solves the above-mentioned technical problems with the following technical solutions: No. 5 total loss system oil is used as the base oil, combined with various composite additives, and its components and their mass percentages are:

components Content (mass percentage) base oil 82%～88% antiwear agent 3.0%～5.0% oily agent 5.0%～8.0% antioxidant 0.5%～1.0% Antifoaming agent 0.001%～0.005% anti-emulsifier 0.2%～0.5% metal deactivator 3.0%～5.0%

The base oil is No. 5 total loss system oil.

The antiwear agent is lead dibutyldithiocarbamate.

The oily agent is sulfurized cottonseed oil.

The antioxidant is 2,2-di-tert-butyl-p-cresol.

The antifoaming agent is simethicone.

Demulsifiers are condensates of amines and epoxy compounds.

Metal deactivators are benzotriazole derivatives.

The lead and its alloy foil cold-rolling lubricant of the present invention has short carbon chain of base oil, low aromatics, low sulfur content, low viscosity, large heat capacity, strong cooling and cleaning ability; meanwhile, it can also improve the lubricating performance of the process, Increase the strength of the oil film in the deformation zone, reduce the friction coefficient; stable composition and performance; no corrosion to metals and equipment; non-toxic, no pungent smell.

Detailed ways

Example 1:

The following components are blended according to mass percentage:

components Content (mass percentage)

No. 5 total loss system oil 82% Lead Dibutyl Dithiocarbamate 5.0% Vulcanized Cottonseed Oil 7.0% 2,2-di-tert-butyl-p-cresol 1.0% Simethicone 0.005% Condensate of amine and epoxy compound 0.495% Benzotriazole derivatives 4.5%

The sum of the above components is 100%.

Example 2:

The following components are blended according to mass percentage:

components Content (mass percentage) No. 5 total loss system oil 85% Lead Dibutyl Dithiocarbamate 4.0% Vulcanized Cottonseed Oil 6.0% 2,2-di-tert-butyl-p-cresol 0.597% Simethicone 0.003% Condensate of amine and epoxy compound 0.4% Benzotriazole derivatives 4.0%

The sum of the above components is 100%.

Example 3:

The following components are blended according to mass percentage:

components Content (mass percentage) No. 5 total loss system oil 88% Lead Dibutyl Dithiocarbamate 3.0% Vulcanized Cottonseed Oil 5.0% 2,2-di-tert-butyl-p-cresol 0.7% Simethicone 0.001% Condensate of amine and epoxy compound 0.299%

Benzotriazole derivatives 3.0%

The sum of the above components is 100%.

The following are the main physical and chemical indicators of the product of Example 1:

project Quality Index Moisture, % trace Kinematic viscosity at 40°C mm ² /s 4.96 Flash point (opening) °C, 110 Mechanical impurities,% none Maximum non-jamming load (Pb), Kg 80 Pour point, °C, -8 water soluble acid or base none Corrosion test (copper sheet, 100°C, 3h), grade 1 viscosity index 90

Claims (1)

1. lead and an alloy foil cold-rolling lubricant thereof, it is characterized in that oil based on employing No. 5 total loss system oil, coordinate multiple composite additive, its each component and mass percent thereof are:

Component Mass percentage content Base oil 82％～88％ Anti-wear agent 3.0％～5.0％ Oiliness improver 5.0％～8.0％ Oxidation inhibitor 0.5％～1.0％ Kilfoam 0.001％～0.005％ Non-emulsifying agent 0.2％～0.5％ Metal passivator 3.0％～5.0％

Each component percentages summation is 100% above;

Wherein:

Anti-wear agent is that dibutyl dithiocaarbamate is plumbous;

Oiliness improver is sulfuration Oleum Gossypii semen;

Oxidation inhibitor is 2,2-ditertbutylparacresol;

Kilfoam is dimethyl silicone oil;

Non-emulsifying agent is amine and epoxy compounds condenses;

Metal passivator is 124 Triazole derivative.