stearate, zinc metal cold extrusion

 Zinc stearate in the metal cold extrusion processing applications
Cold extrusion is a precision plastic volumetric forming technology is an important component. Cold extrusion is in the cold state of the metal
Blank into a mold cavity, the  Diethylene glycol dibenzoate strong pressure and a constant speed under the action of forcing the metal is extruded from the mold cavity,
To achieve the desired shape and size, and a certain mechanical properties of extruded member.
Currently, cold extrusion technology has been in fasteners, machinery, instruments, electrical appliances, light industry, aerospace, marine, military and other industries
Sector wide range of applications. Specific products such as filter, electric fuel pump housings, capacitor housings, aluminum bottle, cosmetic
Commodities aluminum cylinder, bullet shell, the current auto parts, 30% to 40% parts are manufactured by cold extrusion process.
Currently available for cold extrusion of metal materials: lead, tin, silver, aluminum, aluminum alloy, copper and oxygen-free copper (T1,
T2,, brass, bronze, nickel, zinc and cadmium zinc alloy, iron, carbon steel, low alloy steel and stainless steel. This
In addition, some of the titanium and titanium alloys, tantalum, zirconium, and Kovar alloy, also can be cold extrusion, even bearing steel
GCr9, GCr15 and HSS W6Mo5Cr4V2 also be a certain amount of deformation of cold extrusion process.
Cold extrusion, metal materials produced severe plastic deformation, the unit squeeze a lot of pressure, especially in cold extrusion of steel, the most
Large unit extrusion pressure up 2500Mpa. In such a high unit pressure, if no good lubrication, steel bad material
The particles will be welded together with the mold cavity caused severe scratching the surface, making the extrusion pressure increased dramatically, so that the mold
Greatly reduced service life or even rupture. Lubrication is directly related to product quality and the tool life, determine extruded into
Defeated.
So the use of a good and reliable lubrication of cold extrusion method is very important. Lubricants currently used for a liquid
(Such as animal oils, vegetable oils, mineral oil, etc.), there are solid (such as zinc stearate, sodium stearate, graphite, etc.)
They may be used alone, or in combination.
Lubricant mainly in: 1. Reduce friction between the billet and the mold; 2. Reduce mold wear, to mention
High mold life; 3. Improve the quality of products. (1) cold forging lubricants: For forging, now more into
Successful lubrication method is phosphating metal blank surface saponification treatment. The so-called "phosphate" is to use chemical methods
Zinc surface of a metal material and the porous iron phosphate film. The film thickness is generally 10-25μm, the friction
Coefficient is very low. Phosphate film is firmly bonded to the surface the metal billet with a certain plasticity, to a certain extent with gold
Are deformed together, this layer of porous film lubricant can be stored in the extrusion, the mold can serve to isolate the blank
The role of the metal deformation and reduce friction between the mold. The so-called "saponification" is to use fatty acids as soaps Run
Slip agents, so that the zinc phosphate coating with a chemical reaction treatment of zinc stearate lubricant.
Because phosphate - saponification treatment processes numerous long processing time, phosphate strict quality requirements, while the phosphate waste on the ring
Environmental pollution, and  antimony flame retardant thus the world are seeking new ways to replace the lubricating phosphating - saponification process.
Aqueous zinc stearate as a lubricant with good extrudability, extension, adhesion, lubricity
Its safety non-toxic environment pollutant emissions, successfully replaced phosphate - saponification treatment process (degreasing rust - water cleaning - acid
Wash - water cleaning - phosphate - water cleaning - drying - saponification - dry), to meet the ferrous metal cold forming for lubrication
Demanding. And once completed: Surface treatment - water heating - dipping the agent - drying and other processes. Applicable
Implied degree, deformation rate, the surface of the workpiece processing complex, effectively ensuring the accuracy of product processing, improve workpiece
Surface quality, maximum protection of the mold surface, to extend the life of the mold. Thin lubricant film formed single
Parts lubricated, low cost, cost than phosphate - saponification cost savings of 30% to 45%.
Water-based stearate lubricant characteristics
Brushing the surface of the workpiece after the formation of a lubricating film polymer workpiece even withstand repeated cold extrusion, cold stamping, cold
The drawing forming, the lubricating film can be firmly attached to the workpiece surface, and with the extension of the extension of the surface, do not need
Times brushing. Especially when applied to extension degree, deformation rate, complex workpiece surface, which is characterized more
Obvious.
Product Benefits
A, four outstanding advantages
1, completely replace phosphate - saponification process
Without phosphate, zinc stearate lubricant water after brushing the surface of the workpiece firmly attached lubricating film can then be
Direct cold forming, simplifying the process, improving the efficiency and reduce the cost.
2, to solve the many problems grease lubrication
Aqueous zinc stearate lubricant to the workpiece firmly attached to the rough surface of the lubricating film is formed, can solve the conventional grease
Easily lead to the workpiece after forming scattered pressure is not good, wrinkling, burst phenomena and mold strains, nodulation phenomenon.
3, once painted, cold-molding process can be repeated
Aqueous zinc stearate lubricant lubricating film formed in the surface of the workpiece has an extension extending characteristics of the workpiece
Before processing brushing once, after three to five times without further processing are brushing, simplifying the process, improve efficiency, reduce
Lower the  carbon black cost.
4, particularly suitable for extension of large, deformation rate, curved complex parts
Aqueous zinc stearate lubricant is formed in the surface of the workpiece having a lubricating film which extends extension properties, particularly suitable for
For the extension degree, deformation rate, the complexity of the workpiece surface.
B, other general advantages
1, the aqueous zinc stearate small size, can effectively ensure accuracy, improve surface finish and product quality.
2, to reduce machine wear and extend tool life.
3, expanding the workpiece material selectivity.
4, reduce the pressure to save energy.
5, reduce costs and increase efficiency.
6, the water-soluble nature stearate, making easier to remove surface residue.
6, safe non-toxic and pollution-free, there is no emissions and emissions of sewage treatment problems, relieve sewage treatment
Expenses and troubles.
Water stearate can also be applied to drawing, pressure-, stretching and other metal products processing the lubricating treatment. Pre-Market
King is very broad.
I was doing aqueous stearate, the main research market applications, there is need to beg for PM samples.