Aliuminio liejimo formų alyva

Aliuminio liejimo formų skysčiai

Rūšis

Tankis prie 15ºC, kg/m3

Pagrindas

Panaudojimas, savybės

 

 

Molyduval

Aqualub FSG 30

 

 

Aqualub FSG 40

 

Aqualub FSG 20

 

Aqualub FSG 10

 

 

 

 

1200

 

 

1240

 

1150

 

1100

 

Sint POE / Vanduo + Grafitas

30%

 

40%

 

20%

 

10%

 

Karšto liejimo aliuminio formoms skirta grafito tepiklių vandeninė dispersija,

suteikianti saugų ir efektingą atskirimo sutepimą, šalinanti metalo prilipimus prie formų ir įrankių. Skystis turi tipinę atsparą šličiai ir užtikrina tolygų metalo liejimą. Atskietas su vandeniu naudojamas štampų sutepimui daugelyje pramoninių kalvių numetimo kūjuose ir karšto kalimo procesuose, taip pat kalvystės mašinų ir perforatorių susodinimo įrankiams išstūmimo etapuose.

Atskirimo skysčiai aliuminio, diuralio, cinko lydinių liejimui spaudimu 

Formų tepalai įvairių metalų liejimui

Aliuminio ir cinko detalių liejimas aukšto spaudimo būdu

Grafitinė karšto liejimo įrengimų alyva

MOLYDUVAL Aqualub FSG 30 grafito tepiklių vandeninė dispersija, suteikianti saugų ir efektingą atskirimo sutepimą, šalinanti metalo prilipimus prie formų ir įrankių. Skystis turi tipinę atsparą šličiai ir užtikrina tolygų metalo liejimą.

Atskietas su vandeniu naudojamas štampų sutepimui daugelyje pramoninių kalvių numetimo kūjuose ir karšto kalimo procesuose, taip pat kalvystės mašinų ir perforatorių susodinimo įrankiams išstūmimo etapuose.

Savybės

·       Didelės koncentracijos kietieji tepikliai sudėtyje

·       Užtikrina laisvą metalo tekėjimą

·       šalina prilipimus

·       salygoja švarų išbaigto gaminio paviršių

·       mažina trintį ir dėvėjimąsi, tuo prailgindama įrankių tarnavimo

·       saugo paviršių nuo prikepimų ir šlakų formavimosi

·       sudėtyje neturi vaškų, karščiui neatsparių mineralinių alyvų ir yra netoksiška

Pritaikymas

  • ·       kaip kalvystės ar liejinių gamybos lubrikantas plienui, aliuminiu ir neangliniams metalams
  • ·       kaip atleidimo agentas formų ir štampų sutepimui

Naudojimo patarimai

Atskiedus demineralizuotu vandeniu santykiu 1:5 to 1:10,  tepti rankiniu būdu ar automatine purškimo sistema. Kai kuriais atvejais atskiedimas didesniu santykiu iki 1:30 - 1:40 taip pat gali duoti gerus rezultatus. Didesnės koncentracijos emulsijos gali būti naudojamos norint išlaikyti štampo ar stūmoklio temperatūras įmanomai žemesnėmis. Tačiau nerekomenduojama leisti temperatūrai nukristi žemiau nei 120°C, kas gali prailginti numatytą lubrikanto džiuvimą.                               Užtikrinti, kad būtų tolygai padengtas visas darbinis štampo ar stūmoklio paviršius. Tepant šluoste gali būti neįmanoma išgauti pilną paviršiaus padengimą, ko pasekoje įrankis netolygiai dils ir gali atsirasti gaminio prilipimų. Atskiedus vandeniu iš pradžiu gali likti grafito nuosėdų, kurias reikia papildomai suplakti. Automatinė tepimo įranga gali iš karto užtikrinti idealią emulsiją dėl įmontuoto joje maišytuvo. Koncentratas sandėliujant turi būti saugomas nuo šalčio. Priešingu atveju gali susidaryti netirpios frakcijos.

TECHNINIAI PARAMERAI

Specifikacija

Vnt

Reikšmė

Bazinis skystis

 

 

vanduo

Tankis prie15ºC

DIN 51757

kg/m3

1200

Spalva

 

 

pilkšvai juoda

Sieros kiekis

ASTM D-1662-595

%

0

Grafito tepiklių kiekis

 

%

ca. 30

ph-vertė

 

 

10

 

Lubricant for hot forging applications

The lubricant composition may optionally contain additional ingredients such as dispersants, rheology modifiers, biocides, anticorrosives, extreme pressure additives, antifoam agents, wetting agents, metal soaps and mixtures thereof.

The lubricant of the present invention comprises in the range of about 1 to about 99 weight percent oil, preferably in the range of about 1 to about 70% oil and most preferably in the range of about 15 to about 40 weight percent oil. The lubricant contains in the range of about 1 to about 99 weight percent graphite, preferably in the range of about 1 to about 30 weight percent graphite and most preferably in the range of about 3 to about 20 weight percent graphite. The lubricant contains in the range of about 1 to about 99 weight percent phosphorous additive, preferably in the range of about 1 to about 80 weight percent phosphorous additive and most preferably in the range of about 30 to about 80 weight percent of the phosphorous additive.

A further embodiment of the invention comprises a method for forging an article. The method comprises the steps of applying the lead-free lubricant to one or both of the forging apparatus or the workpiece to be forged. The workpiece is inserted into the forging apparatus and forged into the desired article. The forging apparatus is opened and the article is easily removed due to the presence of the lubricant. In an alternative embodiment, the workpiece is inserted before the application of the lubricant and the workpiece and die surface are then lubricated simultaneously

A substantially lead-free lubricant for use in hot forging of metals, especially forging of aluminum and aluminum alloy components. The lubricant comprises one or more oils, graphite, and one or more phosphorus-based additives. Additional additives, such as metallic lubricants and dispersants may also be included. The lubricant does not burn when subjected to temperatures in excess of 300° C.

Forged metal articles are frequently used for various parts in many items, including airplanes, automobiles, electronic components, etc. Iron has traditionally been the metal of choice for most forged metal applications, however the preferred material for many recent applications is changing from iron to lighter alloys, such as aluminum alloys, in order to meet the demand for reducing the overall weight of the material. In recent years, the demand for lightweight products of high quality with good workability has increased and has led to a similar increase in the use of aluminum alloy forging technology.

In the metal forging work or process, a lubricant or lubricating oil is disposed between the metal mold and the workpiece to be molded so as to avoid adhesion between them and to improve the separation ability of the forged article from the metal mold. The proper lubricant is critical in order to allow for proper movement in the die cavities and to allow the forging process to be repeated as many times as possible in succession without re-application of lubricant. Conventional lubricants, which include oil-soluble lubricants with added graphite and water-soluble lubricants consisting of synthetic esters, silicone oils, graphite, extreme-pressure additives and surface active agents, have been typically used as lubricants in aluminum alloy forging.

It is difficult to satisfy the demands of hot aluminum forging by using conventional lubricants. With hot aluminum forging, the existing oil-soluble lubricants have disadvantages, such as flammability, causing smoking and/or workshop contamination, etc. In particular, many oil-soluble lubricants that contain graphite burn when the application temperature is greater than 300° C., such as is required for hot forging of aluminum, causing unsafe working conditions and an increased risk of accidents. Furthermore, the existing water-soluble lubricants have disadvantages including the requirement for treatment of waste water to control water pollution after use which results in cost increases, equipment investment and processing inefficiency.

Many non-flammable additives have been unsuccessfully tested for use in hot forging. For example, halogenated products have been tested, but they produce halogenated residues that are unwelcome for safety and environmental purposes. Magnesium- and borate-based flame retardants have been tested, however they generate residues that negatively affect the lubrication properties. Organic flame retardants in general are not effective because they are not designed to work at temperatures above 300° C. Further, antimony and barium based products are generally not effective in hot forging applications.

Conventional hot aluminum forging lubricants that best facilitate die movement typically include one or more organic lead compounds, such as lead naphthenate and lead stearate. The use of lead in lubricating compositions has come into disfavor because of the health hazards caused by the release of lead into the atmosphere. During the hot forging of aluminum some of the organic lead present in the lubricant is dispersed into the air in quantities which are unacceptable to most local and national governmental regulatory agencies. Such agencies have banned the use of lead in many industries and, where it is still allowed, severely limited the concentrations that may be discharged into the atmosphere. In order to continue using lead-containing lubricants, the hot forging industry would be required to install very expensive exhaust and air filtration systems to lower the concentration of atmospheric lead to acceptable limits. Such exhaust and filtration systems would not be economically feasible for many aluminum hot forging facilities.

It would therefore be advantageous to provide a substantially lead-free lubricant for use in the aluminum and aluminum alloy hot forging industry. Such lubricants provide superior lubrication properties and should not produce smoke or be flammable at temperatures at or above 300° C.