CN107442746B - Preparation method of traction cable sleeve - Google Patents
Preparation method of traction cable sleeve Download PDFInfo
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- CN107442746B CN107442746B CN201710505479.8A CN201710505479A CN107442746B CN 107442746 B CN107442746 B CN 107442746B CN 201710505479 A CN201710505479 A CN 201710505479A CN 107442746 B CN107442746 B CN 107442746B
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- shell
- traction cable
- cable sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/12—Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire
Abstract
The invention relates to a traction cable sleeve, in particular to a traction cable sleeve for mutual traction between buildings, and belongs to the technical field of low-carbon low-alloy cast steel. The traction cable sleeve comprises a shell, a building block and a pin, wherein the building block extends into a cavity of the shell, the building block is clamped on the shell, the pin is positioned on a protruding part of the shell, the traction cable sleeve is firstly manufactured into a semi-finished product of the shell and a semi-finished product of the building block through a water glass melt molding method, and then the semi-finished product of the shell, the semi-finished product of the building block and the semi-finished product of the pin are electroplated and assembled to form the traction cable sleeve, wherein the thickness of an electroplating film of the traction cable sleeve is 10-20 mu m, and the electroplating solution is. The prepared traction cable sleeve has the advantages of high strength, wear resistance, good corrosion resistance and high stability.
Description
Technical Field
The invention relates to a traction cable sleeve, in particular to a traction cable sleeve for mutual traction between buildings, and belongs to the technical field of low-carbon low-alloy cast steel.
Background
The linkage relation of each member, usually need rely on some to draw the rope to realize, the general traction zip that uses on the market usually includes a wire rope body, connecting piece or go-between with wire rope body looks fixed connection, it is fixed mutually through the welded mode between connecting piece or connecting piece and the wire rope body usually, not only the operation, processing etc. are inconvenient, and productivity ratio is lower, high in production cost, draw the flexible pipe that the sliding sleeve is used for the protection on the cable usually not set up in addition, wire rope easily wears out, the fracture, still there is very big restriction in practical application.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a high-strength wear-resistant traction cable sleeve.
The above object of the present invention is achieved by the following technical solutions: a traction cable sleeve comprises a hollow shell which is communicated end to end, wherein the shell is provided with two parallel protruding portions extending outwards, pins movably connected with the protruding portions penetrate through the protruding portions, building blocks are arranged in the shell and detachably connected with the shell, the pins penetrate through pin holes formed in the protruding edges of the protruding portions and are fixed by split pins after penetrating through the two parallel protruding portions, the traction cable sleeve is manufactured into a shell semi-finished product and a building block semi-finished product through a water glass melt molding method, and then the shell semi-finished product, the building block semi-finished product, the pin semi-finished product and the split pin semi-finished product are electroplated and assembled, the thickness of an electroplating film of the traction cable sleeve is 10-20 mu m, and the electroplating solution is zinc sulfate and amphoteric surfactant.
The lost wax method is to make a casting mould with wax, and to apply a molding material to form an integral casting mould. Heating the casting mould to remove wax, forming a cavity casting mould, pouring liquid metal, and cooling to obtain a formed casting. The soluble glass investment casting method is an investment casting method which adopts soluble glass in the molding material. The casting manufactured by adopting the water glass die-melting method has high dimensional precision and high degree of finish, can reduce machining work, greatly save machine tool equipment and machining time, greatly save metal raw materials and simultaneously avoid the stress concentration of residual knife lines after machining. The invention adopts the water glass mold melting method to prepare the semi-finished products of the shell and the building block, and can ensure that the prepared shell and the building block have accurate size and high mechanical strength.
In the traction cable sleeve, the preparation of the mould in the water glass melt-moulding method comprises the following steps:
preparing a wax mould: firstly, preparing wax patterns of a shell and building blocks, adding wax scraps after melting wax materials, mechanically stirring into paste, injecting into a mold, keeping pressure, cooling, taking out, assembling and welding to obtain the wax patterns;
preparing a shell: sanding the wax pattern coating, drying, placing into a hardening tank to obtain a shell surface layer, repeating the steps of coating, sanding and hardening to form a transition layer, and repeating the steps again to form a reinforcing layer;
dewaxing: after the shell manufacturing is finished, putting the shell into a dewaxing frame, enabling the sprue not to float wax, lifting the dewaxing frame away from the water surface, pouring out water, and placing the shell upside down;
roasting: and drying the dewaxed mould shell, and roasting in a kiln to obtain the mould.
Preferably, the wax material is a mixture of white paraffin and polyethylene, and the mass ratio of the white paraffin to the polyethylene is 1-2: 1. the wax material of the invention adopts the mixture of white paraffin and polyethylene, and the polyethylene can be dissolved in the paraffin, so that the paraffin crystal grains can be refined, the mechanical property of the mould material is improved, the shrinkage is reduced, and the surface has luster and smoothness.
Preferably, the pressure maintaining temperature is 70-80 ℃, the pressure maintaining pressure is 12-13Mpa, the pressure maintaining time is 10-15min, and the cooling temperature is 15-25 ℃ in the wax mold preparation process. The shrinkage rate can be controlled in the optimal range by adopting a method for controlling the wax pressing condition, so that the obtained wax mold has better strength.
Preferably, the coating comprises the following components in parts by weight: 20-25 parts of modified water glass, and a wetting agent: 2-3 parts of defoaming agent: 4-5 parts of refractory material: 2-3 parts. Wherein, the preparation of the modified water glass comprises the following steps: slowly adding a sodium tripolyphosphate solution and an acrylic acid solution into a water glass solution, and continuously stirring, wherein the mass ratio of the sodium tripolyphosphate to the acrylic acid to the water glass is (0.1-0.5): (0.1-0.2): 1. the sodium tripolyphosphate and the acrylic acid are added into the water glass to prepare the modified water glass, so that a mixed solution of the sodium tripolyphosphate, the acrylic acid and the water glass can be formed, the uniformity and the stability of the obtained mixed solution are good after the components and the structure of the water glass are changed, meanwhile, the application performance of the water glass binder is improved,
in addition, the wetting agent added into the high-efficiency composite coating is one or two of agricultural emulsion 130 and agricultural emulsion 100. The wetting agent is added in the preparation process, so that the wetting capability can be improved, the layering defect is eliminated, the sand inclusion defect caused by layering is reduced, and the obtained material has high strength. The defoaming agent added into the high-efficiency composite coating is one or more of emulsified silicone oil, polyoxyethylene and pentaerythritol ether. The defoaming agent is added into the coating formula, so that the foam in the coating can be rapidly eliminated and inhibited for a long time, and the coating has excellent stability. And secondly, the refractory material is a mixture of bauxite powder and clay, and the mass ratio of the bauxite powder to the clay is 1-1.5: 1.
Preferably, the sand is kaolin sand and has a viscosity of 40 to 70S. The purpose of sanding is to rapidly thicken the shell, allowing the sand layer to become the skeleton of the shell, dispersing stresses that may be generated by the shell in subsequent processes. The kaolin sand is a hydrous aluminosilicate, and the kaolin sand is added in the water glass investment preparation method, so that the surface of the prepared shell is harder and more wear-resistant.
Preferably, the surface layer sanding is performed by a rain-sprinkling sanding method, and the reinforcing layer sanding is performed by a boiling sanding method. The sand sprinkling by rain can ensure that the sand sprinkling is uniform, the coating is not easy to puncture, but the labor intensity is high, the efficiency is not high, and the method is suitable for the coating of the surface layer; the boiling sanding production efficiency is high, but the coating is easy to puncture, and the method is suitable for the coating of the reinforcing layer.
Preferably, the hardener comprises the following components in parts by weight: crystalline magnesium chloride: 20-30 parts of ammonium chloride: 15-30 parts of stearic acid: 5-10 parts of surfactant: 2-3 parts. Magnesium chloride hardens with water glass, the hardened product, in addition to the silica gel, also having Mg (OH)2The deposition on the shell increases the strength of the shell, while the fired shell forms Mg (OH)2And the high-temperature strength of the shell is increased. Meanwhile, ammonium chloride and stearic acid are added, so that the shell can be hardened in a short time, and the preparation time is shortened. The surfactant is a mixture of polyvinyl chloride alkyl ether and fatty alcohol polyoxyethylene ether, and the mass ratio of the surfactant to the surfactant is as follows: 1-2:1. The invention selects the proportion range, and simultaneously adds the surfactant, so that the generation amount of ammonia gas can be reduced to the minimum, and the performance of the hardening agent is not influenced.
Preferably, the water temperature in the dewaxing groove during dewaxing is 80-90 ℃, and the dewaxing time is 20-40 min.
Preferably, the method also comprises quenching treatment after dewaxing and placing and before roasting, wherein the quenching temperature is 800-900 ℃, the quenching time is 1-1.5h, and the quenching treatment is rapid water cooling after the quenching is finished.
Preferably, the roasting temperature is 700-800 ℃, and the roasting time is 1-2 h.
Preferably, the method also comprises tempering treatment after roasting, wherein the tempering temperature is 600-700 ℃, and the tempering time is 4-5 h.
In the traction cable sleeve, the method for preparing the semi-finished product of the shell and the semi-finished product of the building block by the soluble glass melt molding method comprises the following steps: smelting blast furnace molten iron into molten cast steel, then introducing the molten cast steel into the prepared mould, and respectively obtaining a semi-finished product of the building block and a semi-finished product of the shell with two outwards extending and parallel protrusions through cooling and demoulding.
The shell and the building block are made of German standard cast steel material DIN EN 10294G20Mn, and the steel has the characteristics of good weldability, small crack tendency, excellent comprehensive mechanical property and the like, and can ensure that the shell and the building block have excellent strength supporting performance and are durable in use.
Preferably, the mold is preheated at the temperature of 250-350 ℃.
In the traction cable cover of the above type, the plating solution includes: 40-50g/L of zinc sulfate and 5-10g/L of amphoteric surfactant. After the electrogalvanizing, when the top layer of the galvanized steel sheet is damaged and the iron surface inside is exposed, zinc is more active than iron, so according to the chemical battery principle, zinc can be oxidized before iron, thereby protecting the iron layer from being damaged, protecting the pin and prolonging the service life of the pin. In the invention, the amphoteric surfactant is added into the electroplating solution, so that the obtained plating layer has strong wear resistance.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the soluble glass melt-mold method to prepare the semi-finished products of the building block and the shell, the building block and the shell prepared by the method have high dimensional accuracy, high smoothness and high mechanical strength, and then the shell, the building block and the pin are electroplated, so that the traction cable sleeve has good corrosion resistance;
2. the invention adopts the modified water glass to prepare the coating in the glass melt molding method and adopts the composite coating, so that the prepared building block and shell semi-finished products have good mechanical properties such as stability, hardness and the like;
3. the preparation process of the invention adds the hardening agent and adopts the procedures of quenching, tempering and the like, so that the prepared traction cable sleeve has high strength and high support performance.
Drawings
Fig. 1 is a front view of the present invention.
In the figure, 1, a housing; 11. a protrusion; 2. building blocks; 3. A pin; 4. and a cotter pin.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.
The traction cable sleeve comprises a hollow shell which is communicated end to end, wherein the shell is provided with two parallel protruding parts which extend outwards, pins which are movably connected with the protruding parts penetrate through the protruding parts, building blocks are arranged in the shell and are detachably connected with the shell, the pins penetrate through pin holes arranged at the protruding edges of the protruding parts and are fixed by split pins after penetrating through the two parallel protruding parts, the thickness of an electroplating film of the traction cable sleeve is 10-20 mu m, and the electroplating solution comprises zinc sulfate and amphoteric surfactant.
Table 1: composition and weight portions of traction cable sleeve in embodiments 1-5 of the invention
Example 1:
firstly preparing a shell and building blocks, adding wax scraps after melting wax materials, mechanically stirring into paste, injecting the paste into a mold, keeping pressure, cooling, taking out, assembling and welding to obtain a wax mold, wherein the wax materials are white paraffin: the polyethylene is prepared according to the mass ratio of 1: 1, the pressure maintaining temperature is 70 MPa, the pressure is 12MPa, the pressure maintaining time is 10min, and the cooling temperature is 15 ℃.
Preparing a shell: coating the wax mould according to the paint composition shown in the table 1, sanding, drying, placing into a hardening tank to obtain a shell surface layer, repeating the steps of coating, sanding and hardening to form a transition layer, and repeating the steps again to form a reinforcing layer, wherein the components of the hardening agent are shown in the table 1, and the viscosity of the kaolin sand is 40S;
dewaxing: after the shell manufacturing is finished, putting the shell into a dewaxing frame, enabling the dewaxing frame not to float wax at a pouring gate, lifting the dewaxing frame away from the water surface, pouring out water, and placing the shell upside down, wherein the water temperature in the dewaxing frame is 80 ℃ and the dewaxing time is 20 min;
roasting: drying the dewaxed mould shell, and then roasting in a kiln at the roasting temperature of 700 ℃ for 1 h;
smelting and pouring the shell and the building blocks: firstly, introducing blast furnace molten iron into a carbon furnace for decarburization treatment to obtain molten cast steel; introducing the molten steel-casting into a ladle, introducing an alloying raw material into the molten steel-casting, and alloying; introducing the alloyed cast steel liquid into a cast steel mold preheated to 200 ℃, cooling and demolding to respectively obtain a semi-finished product of a block and a semi-finished product of a shell with two outwards extending and parallel protrusions, wherein the shell and the block are made of German standard cast steel material DIN EN 10294G20Mn
Treating the shell and the building blocks: processing the semi-finished products of the shell and the building block to meet the requirements;
pin preparation: adopting GBT/69945 steel to directly process the steel to a required size through cold rolling or hot rolling;
electroplating: electroplating all the parts, wherein the electroplating thickness is 10 mu m, and the electroplating solution comprises 40g/L zinc sulfate and 5g/L amphoteric surfactant;
assembling: and assembling all parts according to a drawing to obtain a finished traction cable sleeve product.
Example 2
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.1: 1, the pressure maintaining temperature is 71 ℃, the pressure is 12.1MPa, the pressure maintaining time is 10.5min, and the cooling temperature is 16 ℃; the viscosity of the kaolin sand is 43S; the water temperature in the dewaxing frame is 81 ℃, and the dewaxing time is 22 min; the roasting temperature is 710 ℃, and the roasting time is 1.1 h; the preheating temperature of the die is 260 ℃; the thickness of the plating film is 11 μm, the plating solution is 41g/L zinc sulfate and 5.5g/L amphoteric surfactant, after dewaxing and standing, quenching is carried out before roasting, the quenching temperature is 800 ℃ and the time is 1h, tempering is carried out after sintering, the tempering temperature is 600 ℃ and the tempering time is 4h, and the rest is the same as example 1, and the description is not repeated.
Example 3
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.2: 1, the pressure maintaining temperature is 72 ℃, the pressure is 12.2MPa, the pressure maintaining time is 11min, and the cooling temperature is 17 ℃; the viscosity of the kaolin sand is 46S; the water temperature in the dewaxing frame is 82 ℃, and the dewaxing time is 24 min; the roasting temperature is 720 ℃, and the roasting time is 1.2 h; the preheating temperature of the die is 270 ℃; the thickness of the plating film was 12 μm, and the plating solution was 42g/L zinc sulfate and 6g/L amphoteric surfactant, the other points being the same as in example 1, and will not be described in detail herein.
Example 4
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.3: 1, the pressure maintaining temperature is 73 ℃, the pressure is 12.3MPa, the pressure maintaining time is 11.5min, and the cooling temperature is 18 ℃; the viscosity of the kaolin sand is 49S; the water temperature in the dewaxing frame is 83 ℃, and the dewaxing time is 26 min; the roasting temperature is 730 ℃, and the roasting time is 1.3 h; the preheating temperature of the die is 280 ℃; the thickness of the plating film was 13 μm, and the plating solution was 43g/L zinc sulfate and 6.5g/L amphoteric surfactant, the other points being the same as in example 1, and will not be described again.
Example 5
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.4: 1, the pressure maintaining temperature is 74 ℃, the pressure is 12.4MPa, the pressure maintaining time is 12min, and the cooling temperature is 19 ℃; the viscosity of the kaolin sand is 52S; the water temperature in the dewaxing frame is 84 ℃, and the dewaxing time is 28 min; the roasting temperature is 740 ℃, and the roasting time is 1.4 h; the preheating temperature of the die is 290 ℃; the thickness of the plating film was 14 μm, and the plating solution was 44g/L zinc sulfate and 7g/L amphoteric surfactant, the other points being the same as in example 1, and will not be described in detail herein.
Example 6
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.5:1, the pressure maintaining temperature is 75 ℃, the pressure is 12.5MPa, the pressure maintaining time is 12.5min, and the cooling temperature is 20 ℃; the viscosity of the kaolin sand is 55S; the water temperature in the dewaxing frame is 85 ℃, and the dewaxing time is 30 min; the roasting temperature is 750 ℃, and the roasting time is 1.5 h; the preheating temperature of the die is 300 ℃; the thickness of the plating film is 15 μm, the plating solution is 45g/L zinc sulfate and 7.5g/L amphoteric surfactant, after dewaxing and standing, quenching is carried out before roasting, the quenching temperature is 850 ℃ and the time is 1.25h, tempering is carried out after sintering, the tempering temperature is 650 ℃ and the tempering time is 4.5h, and the rest is the same as example 1, and the description is omitted.
Table 2: composition and weight portions of traction cable sleeve of embodiments 6-10 of the invention
Example 7
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.6: 1, the pressure maintaining temperature is 76 ℃, the pressure is 12.6MPa, the pressure maintaining time is 13min, and the cooling temperature is 21 ℃; the viscosity of the kaolin sand is 58S; the water temperature in the dewaxing frame is 86 ℃, and the dewaxing time is 32 min; the roasting temperature is 760 ℃, and the roasting time is 1.6 h; the preheating temperature of the die is 310 ℃; the thickness of the plating film was 16 μm, and the plating solution was 46g/L zinc sulfate and 8g/L amphoteric surfactant, the other points being the same as in example 1, and will not be described again.
Example 8
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.7: 1, the pressure maintaining temperature is 77 ℃, the pressure is 12.7MPa, the pressure maintaining time is 13.5min, and the cooling temperature is 22 ℃; the viscosity of the kaolin sand is 61S; the water temperature in the dewaxing frame is 88 ℃, and the dewaxing time is 34 min; the roasting temperature is 770 ℃, and the roasting time is 1.7 h; the preheating temperature of the die is 320 ℃; the thickness of the plating film was 17 μm, and the plating solution was 47g/L of zinc sulfate and 8.5g/L of an amphoteric surfactant, the other points being the same as in example 1, and the description thereof will not be repeated.
Example 9
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 1.85: 1, the pressure maintaining temperature is 78.5 ℃, the pressure is 12.9MPa, the pressure maintaining time is 14.5min, and the cooling temperature is 23 ℃; the viscosity of the kaolin sand is 65S; the water temperature in the dewaxing frame is 89 ℃, and the dewaxing time is 38 min; the roasting temperature is 785 ℃, and the roasting time is 1.85 h; the preheating temperature of the die is 335 ℃; the thickness of the plating film was 18.5 μm, and the plating solution was 48g/L of zinc sulfate and 9g/L of an amphoteric surfactant, the other points being the same as in example 1, and the description thereof will not be repeated.
Example 10
The difference from example 1 is that the composition of the coating and the hardening agent in this example is shown in table 1, and the wax material is white paraffin: the polyethylene is prepared according to the mass ratio of 2:1, the pressure maintaining temperature is 80 ℃, the pressure is 13MPa, the pressure maintaining time is 15min, and the cooling temperature is 25 ℃; the viscosity of the kaolin sand is 70S; the water temperature in the dewaxing frame is 90 ℃, and the dewaxing time is 40 min; the roasting temperature is 800 ℃, and the roasting time is 2 hours; the preheating temperature of the die is 350 ℃; the thickness of the plating film is 20 μm, the plating solution is 50g/L zinc sulfate and 10g/L amphoteric surfactant, after dewaxing and standing, quenching is carried out before roasting, the quenching temperature is 900 ℃ and the time is 1.5h, tempering is carried out after sintering, the tempering temperature is 700 ℃ and the tempering time is 5h, and the rest is the same as example 1, and the description is not repeated.
Comparative example 1
The difference from the example 1 is that the wax material in the traction cable sleeve of the comparative example consists of white paraffin and stearic acid, and the rest is the same as the example 1, and the description is not repeated.
Comparative example 2
The difference from the embodiment 1 is that the comparative traction cable sleeve adopts common water glass, and the rest is the same as the embodiment 1, and the description is not repeated.
Comparative example 3
The difference from the example 1 is only that the refractory material in the traction cable sleeve of the comparative example is clay, and the rest is the same as the example 1, and the description is not repeated.
Comparative example 4
The difference from the example 1 is only that the three layers of the traction cable sleeve of the comparative example are made of quartz sand, and the rest is the same as the example 1 and is not described again.
Comparative example 5
The difference from example 1 is that the hardener of the traction rope sleeve of the comparative example does not contain a surfactant, and the rest is the same as example 1, and the description is not repeated.
Comparative example 6
The difference from example 1 is that the traction cable cover of this comparative example does not contain a plating step, and the rest is the same as example 1, and will not be described again here.
The rear package shelves prepared in the above examples 1 to 10 and comparative examples 1 to 5 were subjected to a performance test in which corrosion resistance was obtained according to ASTM61 using a submerged portable battery to obtain a breakdown potential, and the test results are shown in table 3.
Table 3: performance test results of traction cable covers in examples 1 to 10 and comparative examples 1 to 6
| Examples | Hardness (Hv 30) | Toughness (K1 c) MN/mm1.5 | Corrosion resistance |
| Example 1 | 3009 | 25.5 | 13.5 |
| Example 2 | 3472 | 22.5 | 10.5 |
| Example 3 | 3375 | 24 | 15 |
| Example 4 | 3262 | 18 | 12 |
| Example 5 | 3720 | 25.5 | 13.5 |
| Example 6 | 3750 | 27 | 19.2 |
| Example 7 | 3568 | 21 | 18 |
| Example 8 | 3235 | 22.5 | 16.5 |
| Example 9 | 3020 | 27 | 13.5 |
| Example 10 | 3484 | 23.8 | 14 |
| Comparative example 1 | 2240 | 11.2 | 2.8 |
| Comparative example 2 | 2485 | 11.2 | 5.6 |
| Comparative example 3 | 2800 | 10 | 6 |
| Comparative example 4 | 2531 | 14.7 | 10.8 |
| Comparative example 5 | 2573 | 13.5 | 12.2 |
| Comparative example 6 | 2846 | 19 | 13.7 |
In conclusion, the data of the embodiment and the comparative example of the invention can show that the traction cable sleeve prepared by the invention through the water glass die-melting method for preparing the building block and the shell and electroplating all the parts has the advantages of high strength, wear resistance, good corrosion resistance and high stability by adding the hardening agent and the specific coating in the preparation process and simultaneously adopting the quenching and tempering processes.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.
Claims (2)
1. A preparation method of a traction cable sleeve is characterized in that the traction cable sleeve comprises a shell, a building block and a pin, wherein the building block extends into a cavity of the shell, the building block is clamped on the shell, the pin is positioned on a protruding part of the shell, the traction cable sleeve is prepared into a semi-finished product of the shell and a semi-finished product of the building block by a water glass melt molding method, and then the semi-finished product of the shell, the semi-finished product of the building block and the semi-finished product of the pin are electroplated and assembled to form the traction cable sleeve, wherein the thickness of an electroplating film of the traction cable sleeve is 10-20 mu m, and the electroplating solution is zinc sulfate;
the preparation of the mould in the soluble glass melt mould method comprises the following steps:
preparing a wax mould: firstly, preparing wax patterns of a shell and building blocks, adding wax scraps after melting wax materials, mechanically stirring into paste, injecting into a mold, keeping pressure, cooling, taking out, assembling and welding to obtain the wax patterns; the wax material is a mixture of white paraffin and polyethylene, and the mass ratio of the white paraffin to the polyethylene is 1-2: 1;
preparing a shell: sanding the wax pattern coating, drying, placing into a hardening tank to obtain a shell surface layer, repeating the steps of coating, sanding and hardening to form a transition layer, and repeating the steps again to form a reinforcing layer; the coating comprises the following components in parts by weight; 20-25 parts of modified water glass, and a wetting agent: 2-3 parts of defoaming agent: 4-5 parts of refractory material: 2-3 parts of a solvent; the preparation of the modified water glass comprises the following steps: slowly adding the sodium tripolyphosphate solution and the acrylic acid solution into the water glass solution, and continuously stirring, wherein the mass ratio of the sodium tripolyphosphate, the acrylic acid and the water glass is (0.1-0.5): 0.1-0.2): 1; the refractory material is a mixture of bauxite powder and clay, and the mass ratio of the bauxite powder to the clay is 1-1.5: 1; the hardening agent comprises the following components in parts by weight: crystalline magnesium chloride: 20-30 parts of ammonium chloride: 15-30 parts of stearic acid: 5-10 parts of surfactant: 2-3 parts of a solvent;
dewaxing: after the shell manufacturing is finished, putting the shell into a dewaxing frame, enabling the sprue not to float wax, lifting the dewaxing frame away from the water surface, pouring out water, and placing the shell upside down;
roasting: drying the dewaxed mould shell, and then roasting in a kiln to obtain a mould;
quenching treatment is also included before roasting after dewaxing placement is finished, the quenching temperature is 800-; the roasting also comprises tempering treatment, wherein the tempering temperature is 600-700 ℃, and the tempering time is 4-5 h;
the surface layer sanding adopts a rain-sprinkling sanding method, and the reinforcing layer sanding adopts a boiling sanding method.
2. The method for preparing the traction cable sheath according to claim 1, wherein the surfactant is a mixture of polyvinyl chloride alkyl ether and fatty alcohol polyoxyethylene ether, and the mass ratio is 1-5: 1.
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| CN105414484A (en) * | 2015-11-24 | 2016-03-23 | 怀宁县群力汽车配件有限公司 | Fired mold precise casting technology for producing automobile H-shaped front shaft |
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| CN104759590A (en) * | 2015-03-19 | 2015-07-08 | 宁海燕 | Investment casting method |
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