Classifications

• • D—TEXTILES; PAPER
  • D07—ROPES; CABLES OTHER THAN ELECTRIC
  • D07B—ROPES OR CABLES IN GENERAL
  • D07B1/00—Constructional features of ropes or cables
  • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
  • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
  • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
  • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
  • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
  • C23C22/08—Orthophosphates
  • C23C22/18—Orthophosphates containing manganese cations
• • D—TEXTILES; PAPER
  • D07—ROPES; CABLES OTHER THAN ELECTRIC
  • D07B—ROPES OR CABLES IN GENERAL
  • D07B2201/00—Ropes or cables
  • D07B2201/20—Rope or cable components
  • D07B2201/2001—Wires or filaments
  • D07B2201/201—Wires or filaments characterised by a coating
  • D07B2201/2011—Wires or filaments characterised by a coating comprising metals
• • D—TEXTILES; PAPER
  • D07—ROPES; CABLES OTHER THAN ELECTRIC
  • D07B—ROPES OR CABLES IN GENERAL
  • D07B2205/00—Rope or cable materials
  • D07B2205/30—Inorganic materials
  • D07B2205/3021—Metals

Definitions

• This invention relates to the treatment of steel wire, such as roping wire, brush wire, armouring wire, and music wire, for example.
• the wire to be treated is at its final size, i.e. all the drawing steps have been completed.
• the present invention is the result of an investigation into possible ways of improving the lubication and corrosion resistance of ropes employed in friction winders.
• the resulting invention has utility in a wide variety of wire products.
• Friction winders depend upon the maintenance of a coefficient of friction between the rope and the sheave at a value of 0.2. Any lubricant permeating to the exterior of a rope reduces this value and can result in loss of traction and slip. Conversely, to reduce the amount of lubricant within a rope, to a level which prevents surface exudation, often causes internal corrosion and fretting.
• the present invention provides a method of treating steel wire which is at its final size, comprising forming a manganese phosphate coating on the steel wire.
• the invention also provides a steel wire having a manganese phosphate coating.
• the invention further provides a steel wire strand or rope in which each wire (or at least each wire in the outer layers) has a manganese phosphate coating.
• the coating is preferably oil-sealed; the oil sealant can be applied to the coated wire, the strand. or the rope.
• the invention also provides a method of manufacturing a steel wire strand or rope, in which wires to be stranded are provided with a manganese phosphate coating.
• an oil sealant is applied to the coated wires before stranding.
• manganese phosphate coating is analogous to that of a zinc phosphate coating, consisting primarily of a hydrated tertiary manganese phosphate together with small amounts of an iron manganese phosphate.
• the wire coating may be applied by spray or immersion, the optimum thickness being controlled by (a) the original state of the steel surface, (b) the preliminary preparation of the wire surface, and (c) the nature of the metal treated.
• the spray or immersion method can be used to coat wires on an in-line basis, in which individual wires are passed either singly or in multiples continuously through the treatment chemicals. Or a batch process can be applied in which wires in coil form are exposed to the treatment chemicals.
• the cleaning and coating process utilised is as followsz- 1. Removal of wire drawing residues, i.e. pigmented drawing compounds, drawing oils, greases, waxes, etc., from the wire surface. This can be achieved by solvent degreasing, vapour degreasing emulsion cleaning, or alkaline degreasing.
• the preferred method is alkaline degreasing, which utilises the saponifying and emulsifying effect of aqueous alkalis reinforced by sequestrating, complexing, and surface active agents.
• the ingredients can be sodium hydroxide, sodium carbonate, sodium metasilicates, tri-sodium phosphate, sodium pyrophosphate, sodium borates, complexing agents (such as EDTA, gluconates, heptonates, polyphosphates, and cyanides) and organic surfactants. They may be used hot or cold with or without applied current, which may be either anodic or cathodic.
• a preferred proprietary alkaline cleaner is Pyroclean 303, which may be applied by either spray or immersion. The preferred method is by immersion.
• the solution can operate over a temperature range of 15C to C, but the preferred range is 82C 99C.
• the concentration range utilised can be from 0.5 oz to 50 oz per gallon (imp) but the preferred concentration is 3 oz/gallon (imp).
• the immersion time can vary from 1 to 30 min depending upon the soil to be removed, but experience has shown that 15 min is sufficient to give the desired result.
• a water rinse is utilised to remove any excess alkaline solution.
• This system can either be spray, immersion or both and the temperature can be ambient to boiling.
• the preferred method is a spray rinse, followed by a cold freerunning-water dip, followed by a spray rinse.
• the wire is then passed, without drying, into a pretreatment solution which activates the metal surface in order to facilitate formation of a fine grained manganese phosphate coating.
• the preferred pretreatment chemical utilised is Parcolene VM, although other proprietary chemicals could serve equally well.
• the operating solution is prepared by adding Parcolene VM C powder at the rate of 3 lb for each 100 gallons of solution required. Then continuous agitating equipment, i.e. paddle type stirrer or compressed air, is turned on and the Parcolene VM A powder is added at the rate of 3 lb for each gallons of solution required. The bath is then brought to the operating level by the addition of the necessary water and heated to the operating temperature, which may be in the range of l6C to 60C. The wire, wet with water from the rinse system, is then immersed in the Parcolene VM for l 10 minutes.
• continuous agitating equipment i.e. paddle type stirrer or compressed air
• the temperature at which the Parcolene VM is operated depends upon the degree of refinement of the manganese phosphate coating required. In general it has been found that higher temperatures lead to greater refinement whereas lower temperatures lead to longer bath life.
• the preferred method is ambient temperature with an immersion time of 5 min.
• the wire, wet from the pretreatment process, is then treated with manganese phosphate solution.
• These solutions produce a superficial layer of insoluble complex phosphates by chemical reaction with the metal surface. This reaction is produced by slightly acid (pH 2 3) aqueous solutions based on monometallic orthophosphates (i.e. manganese) and free phosphoric acid.
• the solutions contain one or more oxidising agents which act as depolarisers or reaction accelerators, such as nitrate, nitrite, chlorates. etc. and sometimes with substances that help to produce a finer coating, such as polyphosphates, nickel or calcium salts.
• the preferred chemical is Parco-Lubrite 2
• the method of treatment is by immersion for 15 min at a temperature of 95C.
• the preferred pointage for the bath which is a value based upon titration of a ml sample of the solution with N/5 NaOH, is 28 32 points.
• a water rinse is utilised to remove excess phosphating solution.
• the preferred operation of this rinse is the same as for after the alkaline degreasing.
• the coating is then dried, which can be achieved by hot air blowing, hot air oven, flash baking, etc.
• the preferred method is a hot air recirculating oven at a temperature of 150C, although a range of temperatures from 100C to 250C can be used.
• the wire is left until dry, but it has been found that min is sufficient.
• the sealants used can be organic compounds of the oil type (non-setting mineral oils of various weights and viscosities), the solvent type (petroleum base film forming materials and rust inhibitors dissolved in petroleum solvents), emulsifiable type (petroleum base rust preventativcs modified to form stable emulsion when mixed with water), or the wax type.
• Inorganic sealants of the chromate, dichromate type may also be used. The sealants may be applied by brushing, spraying, dipping, flushing, etc.
• the preferred material is an oil based solvent cut back solution, namely Parker Finish P75 and the preferred application methods are by immersion or spray ing. It can be applied at temperatures from 15C to 50C, preferably at 50C. [f spraying is used the solution is kept at room temperature.
• SHELL 4-BALL MACHINE This comprises a compact assembly of 4 identical balls, three of which are clamped in a conical sided container; they are centred and remain stationary.
• the fourth ball is secured to a motor shaft and turns at a constant speed (1500 rev/min).
• the container is mounted on a cradle which can transmit the test load so that the three fixed balls are pressed against the fourth by the load.
• Hertz load curves can be drawn which relate the wear scar diameter to the load.
• the scar diameter increases progressively; seizure (welding of the balls) occurs at a certain load when the temperature is high enough.
• the mean Hertz load is the mean of the corrected loads P P load applied (kg) D scar diameter (mm) d scar diameter in mm due to static load P
• the following table shows the results of tests carried out on the Shell 4-Ball machine, of l min duration, using as a lubricant a pure mineral oil of naphthenic origin. Zinc phosphated, manganese phosphated, and untreated balls were tested.
• a method of manufacturing steel wire strand or rope from steel wires which are at their final size comprising the sequential steps of:
• a method of manufacturing steel wire strand or rope from steel wires which are at their final size comprising the sequential steps of:
• a corrosion resistant sealant selected from the group consisting of organic compounds of the oil type (non-setting mineral oils of various weights and viscosities), the solvent type (petroleum base film forming materials and rust inhibitors dissolved in petroleum solvents), emulsifiable type (petroleum base rust preventatives modified to form stable emulsion when mixed with water), wax type, and inorganic sealants of the chromate and dichromate type, and stranding the wires to form a strand.
• a corrosion resistant sealant selected from the group consisting of organic compounds of the oil type (non-setting mineral oils of various weights and viscosities), the solvent type (petroleum base film forming materials and rust inhibitors dissolved in petroleum solvents), emulsifiable type (petroleum base rust preventatives modified to form stable emulsion when mixed with water), wax type, and inorganic sealants of the chromate and dichromate type before stranding.

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• Chemical & Material Sciences (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Ropes Or Cables (AREA)
• Chemical Treatment Of Metals (AREA)
• Preventing Corrosion Or Incrustation Of Metals (AREA)
• Metal Extraction Processes (AREA)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

Country Status (13)

Cited By (8)

Families Citing this family (3)

Citations (3)

• 1972
  • 1972-08-18 GB GB3861472A patent/GB1417012A/en not_active Expired
• 1973
  • 1973-08-16 NO NO3251/73A patent/NO135996C/no unknown
  • 1973-08-16 DK DK452173A patent/DK149783C/da active
  • 1973-08-17 DE DE19732341756 patent/DE2341756A1/de active Pending
  • 1973-08-17 CA CA179,036A patent/CA998924A/en not_active Expired
  • 1973-08-17 US US389403A patent/US3899365A/en not_active Expired - Lifetime
  • 1973-08-18 JP JP48092844A patent/JPS49131920A/ja active Pending
  • 1973-08-20 AU AU59402/73A patent/AU473567B2/en not_active Expired
  • 1973-08-20 NL NL7311452A patent/NL7311452A/xx not_active Application Discontinuation
  • 1973-08-20 IT IT28016/73A patent/IT1003130B/it active
  • 1973-08-20 FR FR7330198A patent/FR2196398B1/fr not_active Expired
  • 1973-08-20 SE SE7311278A patent/SE388635B/xx unknown
  • 1973-08-20 BE BE134733A patent/BE803785A/fr unknown

Patent Citations (3)

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