CN102226278B - Preparation method of sieve plate of wear resistant vibrating sieve - Google Patents
Preparation method of sieve plate of wear resistant vibrating sieve Download PDFInfo
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Abstract
The invention discloses a preparation method of the sieve plate of a wear resistant vibrating sieve. The method comprises the following steps: the mechanical method or chemical method for rod-part steel is selected to remove the greasy dirt and rust on the surface of the steel, alloy powder and adhesive are used to prepare alloy powder paint, the alloy powder paint is evenly coated on the surface of the rod-part steel without greasy dirt and rust, then the steel is heated and dried, the rod part coated with the alloy powder paint moves down through a high frequency induction coil vertically, inductive heating is utilized to melt the alloy powder paint and ensure that the paint sticks to the surface of the rod part, the wear resistant rod-part material is prepared, and then the conventional welding method or mechanical fixation method is adopted to fix the rod-part material on a sieve plate frame to obtain the sieve plate of the wear resistant vibrating sieve. The method has low equipment investment, is simple in operation, easy to control and low production cost and can be produced in batches; and the sieve plate has high wear resistance and good toughness and impact resistance.
Description
Technical field
The present invention relates to a kind of preparation method of the vibration sieve plate that resistance to wears, belong to mining machinery and Composite Preparation field.
Background technology
Vibratory screening apparatus is at present domestic and international widely used a kind of screening plant, is mainly used in material is carried out classification, perhaps removes the impurity in the material through screening, and wherein the sieve plate of vibratory screening apparatus is the bigger spare part of consumption.Bar material is fixed on one to be positioned on the planar framework; And making the parallel and maintenance certain clearance of rod member, the gap between the adjacent rod member just becomes the sieve aperture slit of sieve plate, through the size in adjustment rod member gap; Can make different sieve plates, to adapt to the granularity of required screening material.This sieve plate of being made by bar material, because ME is simple, easy to maintenance, cost is low and used more and more widely.
The bar material that present preparation vibratory screening apparatus uses in order to improve its wear resisting property, often need increase hardness as homogeneous, the single common material of performance (like steel alloy), and the increase of hardness can make toughness and plasticity reduce, and is difficult to meet the demands.Common used material like work sieve plate under the worst hot case is CrMnN steel (ZG30Cr18Mn12Si2N), its hardness lower (about HRC25), and wear resisting property is relatively poor, and work-ing life is short.Chinese invention patent ZL03114581.7 " antiwear multi-element screening plate made of high-Cr cast iron and method of manufacture thereof "; A kind of antiwear multi-element screening plate made of high-Cr cast iron is disclosed; Hardness has reached HRC55～60, and high abrasion resistance is although improved toughness through rotten the processing; But its toughness is still lower, is difficult to bear the intense impact of material.Material is impacted bigger operating mode, domestic-developed the high mangaenese steel sieve plate, after this sieve plate has only shock load to make surface hardening, just can have wear resisting property preferably.Above-mentioned sieve plate adopts castmethod production, and sieve plate integral body is with a kind of homogeneous material.In addition, the sieve plate of homogeneous material, if the alloy system more complicated, when containing alloying elements such as valuable Ni, Mo, W, Nb, cost is higher.Sieve plate was both wear-resisting, shock-resistant, the target that the cheap again people of being of cost pursue.On low-carbon steel rod bundle, put on the cylindrical ceramic cover, and with the bonding rod member shape material of processing of caking agent, utilized ceramic high-wearing feature, the cheap advantage of soft steel, but ceramic jacket in use is easy to because of impacting breakage, the life-span improves limited.
Chinese patent CN85108954 discloses a kind of making method with wearable overlay metal sieve plate, it is characterized in that on steel plate, processing earlier sieve aperture, is equipped with the high temperature resistant nonmetal cream that 3%～5% water glass processes with casting mould material then sieve aperture is filled and led up; Again with electric arc or plasma arc with the wear resistant alloy built-up welding on surface of steel plate with holes; This sieve plate toughness is better, but easy to wear around the sieve aperture, and ME is complicated; Production efficiency is lower, is difficult to scale operation.
Vibratory screening apparatus is applied to various operating modes; Work in high temperature like the sinter machine vibratory screening apparatus; Handled agglomerate temperature is up to 780～850 ℃, is mainly used in the classification of agglomerate and screens out in the agglomerate powder less than 5mm, to satisfy the requirement of blast furnace production to its granularity; Sieve plate is the key part of vibratory screening apparatus, and its quality directly influences the productivity of whole sintering work system and the screening effect of agglomerate.The high temperature sieve plate of work down lost efficacy because of high temperature oxidation, high temperature creep fracture, thermal shocking fatigue and high temperature wear etc.
Harshness day by day along with the screening plant applying working condition; Like wearing and tearing, burn into high temperature, shock load etc.; Also more urgent to low cost, high life, high efficiency, wear-resistant sieve plate demand; And bar material is crucial starting material of making sieve plate, and it is significant for the sieve plate that the quality that improves sieve plate, manufacturing are suitable for various operating modes to design new bar material.
Summary of the invention
The object of the invention just provides a kind of preparation method of the vibration sieve plate that resistance to wears.This preparing method's facility investment is few, simple to operate, control is easy, can produce in batches, production cost is low, the existing high wear resisting property of sieve plate, and good toughness is arranged again, and shock resistance is good.
Technical conceive of the present invention is: according to the requirement of the size and the material sieving technology parameter of vibratory screening apparatus, select for use shaped steel to prepare the framework of vibratory screening apparatus with existing working method; Soft steel or the low alloy steel rod member of selecting diameter 8～50mm for use be as the core metal material, and it is clean, subsequent use to adopt mechanical means or chemical process to remove impurity such as the iron rust of core metal material surface, greasy dirt; Select powdered alloy for use, in powdered alloy, add the caking agent of powdered alloy quality 4～8%, mix and obtain powdered alloy coating; Powdered alloy coating evenly is coated to the surface of core metal material, is heated to 100～120 ℃ then, the moisture in the powdered alloy coating is removed in oven dry; With the induction heating equipment of routine, the rod member that scribbles powdered alloy vertically downward through radio-frequency induction coil, is adopted the surface of induction heating sintering powdered alloy to rod member, obtain the wearing-resistant rod piece material; Adopt conventional welding process or mechanical fixation method to install on the above-mentioned vibratory screening apparatus framework wearing-resistant rod piece material, wearing-resistant rod piece is on the plane, and keeps certain clearance between the adjacent rod member, makes vibration sieve plate.
Invent the preparation method of the said vibration sieve plate that resistance to wears, concrete steps are:
(1) selecting cross-sectional diameter for use is the rod member shape steel of 8～50mm, and the length of rod member shape steel is confirmed arbitrarily as required; And remove greasy dirt, the iron rust of rod member shape steel surface with mechanical means or chemical process;
Above-mentioned mechanical means can be selected wire wheel commonly used or grinder buffing cleaning for use, perhaps adopts shot-peening or sandblasting commonly used; Preferentially select the shot peening method for use;
Above-mentioned chemical process can adopt sulfuric acid or hydrochloric acid, or uses both mixed aqueous solutions; The parameter of pickling is that 10% sulfuric acid or aqueous hydrochloric acid, pickling temperature are 40-60 ℃, 10-20 minute pickling time; Perhaps the 5%-10% sulfuric acid and the 2%-10% mixed in hydrochloric acid aqueous solution, 20 ℃ of pickling temperatures, 2-10 minute pickling time;
(2) prepare powdered alloy coating with powdered alloy and caking agent;
(3) with ordinary method the powdered alloy coating of step (2) preparation evenly is coated to the said rod member shape steel surface of having removed surface and oil contaminant, iron rust of step (1), heating, drying then;
(4) adopt conventional induction heating equipment, the rod member that scribbles powdered alloy coating that step (3) is prepared passes through radio-frequency induction coil vertically downward, utilizes the said powdered alloy coating of induction heating sintering to make it to be affixed to the surface of rod member, makes the bar material that resistance to wears;
(5) select angle steel for use, according to the size and dimension requirement of the vibration sieve plate of pre-prepared, prepare the framework of vibration sieve plate with ordinary method, the square edge of wherein said angle steel is in the plane, and the right angle of angle steel is towards the inboard of framework;
(6) the wearing-resistant rod piece materials processed that step (4) is obtained becomes to be fit to the size of the said sieve plate framework of step (5), is fixed on the sieve plate framework with conventional welding process or mechanical fixation method, promptly gets the vibration sieve plate that resistance to wears;
It is characterized in that:
The said rod member shape of step (1) steel select 20#, 35#, 45#, Q235B, 40Cr or Q345B structural section;
The said method for preparing powdered alloy coating of step (2) is: selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 5%, mixes, and promptly gets powdered alloy coating; Wherein, The composition of said powdered alloy is by percentage to the quality: C is 3%～3.6%, Cr is 28%～32%, B is 1.5%～2.5%, Si is 1.5%～2.5%, Mo is 3.0%～4.0%, Ni is 4.0%～6.0%, surplus for Fe with do not influence the impurity of powdered alloy performance, and its fusing point is 1200～1250 ℃; Or C is 4.5%～5.0%, Cr is 45%～50%, B is 1.8%～2.3%, Si is 0.8%～1.4%, surplus for Fe with do not influence the impurity of powdered alloy performance, its fusing point is 1200～1280 ℃; Said caking agent is the mixture of positive silicic acid ethanol, organosilicon sealant, epoxy resin, Z 150PH or CMC 99.5 and two or more any mass ratio thereof;
The said powdered alloy coating of step (3) is 0.5～10mm at the coat-thickness of rod member shape steel surface; Heating temperature is 100～120 ℃, and be 0.2～2 hour heat-up time;
When the said induction heating of step (4) scribbled the rod member of powdered alloy coating, the fusing situation that observe rod member surface alloy powder coating when its surface demonstrates minute surface appearance light, shifted out coil with rod member immediately.
Among the preparation method of the above-mentioned vibration sieve plate that resistance to wears: the preferred Q235B of step (1) said rod member shape steel, 40Cr or Q345B structural section.
Among the preparation method of the above-mentioned vibration sieve plate that resistance to wears: the preferably positive silicic acid ethanol of the said caking agent of step (2), organosilicon sealant, epoxy resin or CMC 99.5.
Above-mentioned steps (2) is said to be prepared in the method for powdered alloy coating, in caking agent, also can add the fluorite powder of caking agent quality 0～6%, to reduce the slag inclusion of wear-resistant alloy layer.
Wherein: step (2) is said to be prepared in the method for powdered alloy coating, the preferred fluorite powder that adds caking agent quality 2.5～3.5% in caking agent.
The preparation method of the vibration sieve plate that resistance to wears according to the invention has following positive effect:
(1) vibration sieve plate of this patent preparation has good wear resistance, thermotolerance and shock resistance.
(2) this patent is used for the wearing-resistant rod piece material of sieve plate, and the core metal material adopts toughness and good soft steel or the low alloy steel of plasticity, and the surface is a wear-resistant alloy layer, makes this wearing-resistant rod piece have good abrasion resistance, and work-ing life is higher, can not rupture again simultaneously.
(3) with the vibration sieve plate of wearing-resistant rod piece preparation, can change the wearing-resistant rod piece of inefficacy separately, sieve plate easy to maintenance is suitable for on-the-spot repairing fast, and cost is low.
(4) thickness of wearing-resistant rod piece wearing layer can be at 0.5mm to adjustment flexibly between the 10mm, satisfying the vibratory screening apparatus demands of different in work-ing life, and is metallurgical binding between rod member shape steel and the wear resistant alloy around it, and the bonding strength height does not come off, and the life-span is long.
(5) production technique of wearing-resistant rod piece is simple, and facility investment is few, can produce in batches, and cost is low.
Description of drawings
Fig. 1 vibratory screening apparatus is along the sectional view of wearing-resistant rod piece axis normal framework.
Wherein: 1 framework processed by angle steel, 2 wearing-resistant rod pieces, 3 attachment welds.
The sectional view of the vertical wearing-resistant rod piece axis of Fig. 2 vibratory screening apparatus.
Wherein: 1 framework processed by angle steel, 2 wearing-resistant rod pieces.
The vertical view of Fig. 3 vibratory screening apparatus.
Wherein: 1 framework processed by angle steel, 2 wearing-resistant rod pieces, 3 attachment welds.
Embodiment
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3, further specify the preparation method of the vibration sieve plate that resistance to wears.
Select for use shaped steel to make the framework of vibratory screening apparatus, this patent with the angle steel be the example explanation as follows: confirm length, the width of framework according to the dimensional requirement of vibration sieve plate, with the requirement of the angle steel of selecting for use according to lengths of frame and width, the blanking of employing prior art.A square edge level with angle steel during assembling places on the plane, and the right angle adopts existing welding process to connect towards the inboard of framework, makes framework 1.The preparation method of wearing-resistant rod piece 2 is; Selecting cross-sectional diameter for use is the rod member shape steel of 8～50mm, and the length of rod member shape steel is confirmed according to the width or the length of said frame, and removed greasy dirt, the iron rust of rod member shape steel surface with mechanical means or chemical process; Powdered alloy of selecting for use and caking agent are mixed; Evenly be coated on the surface of rod member shape steel, after the oven dry, the rod member that scribbles powdered alloy coating passed through radio-frequency induction coil vertically downward; Adopt the surface of induction heating sintering powdered alloy, obtain wearing-resistant rod piece material 2 to rod member.Wearing-resistant rod piece material 2 usefulness weld seams 3 or mechanical fixation method are fixed on the sieve plate framework 1, obtain the sieve plate finished product.
Specific embodiment is following:
Embodiment 1:
(1) selecting cross-sectional diameter for use is that 40mm, length are the Q235B rod member shape steel of 990mm, adopts shot peening method commonly used, removes greasy dirt, the iron rust on rod member surface.
(2) preparation powdered alloy coating, selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 5%, and mixes, and makes powdered alloy coating.
The composition of powdered alloy (mass percent) is: C is 3.5%, Cr is 31%, B is 2.4%, Si is 2.2%, Mo is 3.1%, Ni is 4.2%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
Caking agent is an organosilicon sealant, in caking agent, adds the fluorite powder of caking agent quality 3%.
(3) with the powdered alloy coating of step (2) preparation, adopt prior art evenly to be coated to the bar material surface that step (1) obtains, the thickness of coating is 8mm.Be heated to 120 ℃ then, be incubated oven dry in 0.5 hour.
(4) adopt existing induction heating equipment; The rod member that scribbles powdered alloy coating that step (3) is obtained passes through radio-frequency induction coil vertically downward; When the powdered alloy coating fusing when rod member surface, its surface present the same bright of minute surface, immediately rod member is shifted out coil.Induction heating makes the molten surface that is applied to rod member of powdered alloy, obtains the wearing-resistant rod piece material.
(5) selecting specification for use is the angle steel of 80 (length of side) * 80 (length of side) * 8 (thickness) (unit is mm), adopt prior art for preparing long for 2000mm, wide be the rectangular frame of 1000mm.A square edge of angle steel is positioned at a plane, and the right angle of angle steel is towards the inboard of framework.
(6) with the wearing-resistant rod piece material of step (4) the preparation width along framework, evenly be layed in step (5) framework and be positioned on the planar angle steel square edge, the gap of the wearing-resistant rod piece and the framework angle steel straight vertical arm of angle is 5mm.The gap of adjacent wearing-resistant rod piece is 10mmm.Adopt existing weldprocedure, the two ends and the framework of wearing-resistant rod piece is welded to connect, promptly make vibration sieve plate.
Embodiment 2:
(1) selecting cross-sectional diameter for use is that 10mm, length are the Q345B rod member shape steel of 540mm; Adopt the mixed aqueous solution chemical process cleaning substrate surface of sulfuric acid commonly used and hydrochloric acid; The pickling parameter is: percent by volume is that 9% sulfuric acid and percent by volume are the mixed aqueous solution of 6% hydrochloric acid; 20 ℃ of pickling temperatures, 10 minutes pickling time.
(2) preparation powdered alloy coating, selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 6%, and mixes, and makes powdered alloy coating.
The composition of powdered alloy (mass percent) is: C is 5.0%, Cr is 48%, B is 2.1%, Si is 1.2%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
Caking agent is that organosilicon sealant and epoxy resin mixed in 1: 1 by mass percentage.
(3) with the powdered alloy coating of step (2) preparation, adopt prior art evenly to be coated to the bar material surface that step (1) obtains, the thickness of coating is 4mm.Be heated to 110 ℃ then, be incubated oven dry in 0.3 hour.
(4) adopt existing induction heating equipment; The rod member that scribbles powdered alloy coating that step (3) is obtained passes through radio-frequency induction coil vertically downward; When the powdered alloy coating fusing when rod member surface, its surface present the same bright of minute surface, immediately rod member is shifted out coil.Induction heating makes the molten surface that is applied to rod member of powdered alloy, obtains the wearing-resistant rod piece material.
(5) selecting specification for use is 30 * 30 * 3 angle steel, adopts existing weldprocedure to prepare the square frame that the length of side is 500mm.A square edge of angle steel is positioned at a plane, and the right angle of angle steel is towards the inboard of framework.
(6) the wearing-resistant rod piece material that step (4) is prepared evenly is layed in step (5) framework and is positioned on the planar angle steel square edge, and the gap of the wearing-resistant rod piece and the framework angle steel straight vertical arm of angle is 5mm.The gap of adjacent wearing-resistant rod piece is 3mm.Adopt existing weldprocedure, the two ends and the framework of wearing-resistant rod piece is welded to connect, promptly make vibration sieve plate.
Embodiment 3:
(1) selecting cross-sectional diameter for use is that 20mm, length are the 45# rod member shape steel of 540mm; Adopt the mixed aqueous solution chemical process cleaning substrate surface of sulfuric acid commonly used and hydrochloric acid; The pickling parameter is: percent by volume is that 9% sulfuric acid and percent by volume are the mixed aqueous solution of 6% hydrochloric acid; 20 ℃ of pickling temperatures, 10 minutes pickling time.
(2) preparation powdered alloy coating, selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 6%, and mixes, and makes powdered alloy coating.
The composition of powdered alloy (mass percent) is: C is 4.8%, Cr is 45%, B is 1.8%, Si is 1.2%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
Caking agent is an epoxy resin, in caking agent, adds the fluorite powder of caking agent quality 4%.
(3) with the powdered alloy coating of step (2) preparation, adopt prior art evenly to be coated to the bar material surface that step (1) obtains, the thickness of coating is 6mm.Be heated to 110 ℃ then, be incubated oven dry in 0.8 hour.
(4) adopt existing induction heating equipment; The rod member that scribbles powdered alloy coating that step (3) is obtained passes through radio-frequency induction coil vertically downward; When the powdered alloy coating fusing when rod member surface, its surface present the same bright of minute surface, immediately rod member is shifted out coil.Induction heating makes the molten surface that is applied to rod member of powdered alloy, obtains the wearing-resistant rod piece material.
(5) selecting specification for use is 50 * 50 * 5 angle steel, adopts existing weldprocedure to prepare the square frame that the length of side is 550mm.A square edge of angle steel is positioned at a plane, and the right angle of angle steel is towards the inboard of framework.
(6) the wearing-resistant rod piece material that step (4) is prepared evenly is layed in step (5) framework and is positioned on the planar angle steel square edge, and the gap of the wearing-resistant rod piece and the framework angle steel straight vertical arm of angle is 5mm.The gap of adjacent wearing-resistant rod piece is 5mm.Adopt existing weldprocedure, the two ends and the framework of wearing-resistant rod piece is welded to connect, promptly make vibration sieve plate.
Embodiment 4:
(1) selecting cross-sectional diameter for use is that 30mm, length are the 40Cr rod member shape steel of 990mm, adopts shot peening method commonly used, removes greasy dirt, the iron rust of substrate surface.
(2) preparation powdered alloy coating, selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 4%, and mixes, and makes powdered alloy coating.
The composition of powdered alloy (mass percent) is: C is 5.0%, Cr is 48%, B is 2.3%, Si is 1.3%, V is 1.2%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
Caking agent is a CMC 99.5, in caking agent, adds the fluorite powder of caking agent quality 3%.
(3) with the powdered alloy coating of step (2) preparation, adopt prior art evenly to be coated to the bar material surface that step (1) obtains, the thickness of coating is 8mm.Be heated to 120 ℃ then, be incubated oven dry in 1 hour.
(4) adopt existing induction heating equipment; The rod member that scribbles powdered alloy coating that step (3) is obtained passes through radio-frequency induction coil vertically downward; When the powdered alloy coating fusing when rod member surface, its surface present the same bright of minute surface, immediately rod member is shifted out coil.Induction heating makes the molten surface that is applied to rod member of powdered alloy, obtains the wearing-resistant rod piece material.
(5) selecting specification for use is 63 * 63 * 5 angle steel, adopts existing weldprocedure to prepare the square frame that the length of side is 1000mm.A square edge of angle steel is positioned at a plane, and the right angle of angle steel is towards the inboard of framework.
(6) the wearing-resistant rod piece material that step (4) is prepared evenly is layed in step (5) framework and is positioned on the planar angle steel square edge, and the gap of the wearing-resistant rod piece and the framework angle steel straight vertical arm of angle is 5mm.The gap of adjacent wearing-resistant rod piece is 5mm.Adopt existing weldprocedure, the two ends and the framework of wearing-resistant rod piece is welded to connect, promptly make vibration sieve plate.
Embodiment 5:
(1) selecting cross-sectional diameter for use is that 10mm, length are the 20# rod member shape steel of 690mm; Adopt aqueous sulfuric acid chemical process cleaning substrate surface commonly used; The pickling parameter is: percent by volume is 10% aqueous sulfuric acid, and pickling temperature is 55 ℃, 25 minutes pickling time.
(2) preparation powdered alloy coating, selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 4%, and mixes, and makes powdered alloy coating.
The composition of powdered alloy (mass percent) is: C is 3%, Cr is 28%, B is 2.5%, Si is 2.0%, Mo is 3.5%, Ni is 4.5%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
Caking agent is positive silicic acid ethanol, in caking agent, adds the fluorite powder of caking agent quality 3%.
(3) with the powdered alloy coating of step (2) preparation, adopt prior art evenly to be coated to the bar material surface that step (1) obtains, the thickness of coating is 5mm.Be heated to 100 ℃ then, be incubated oven dry in 0.5 hour.
(4) adopt existing induction heating equipment; The rod member that scribbles powdered alloy coating that step (3) is obtained passes through radio-frequency induction coil vertically downward; When the powdered alloy coating fusing when rod member surface, its surface present the same bright of minute surface, immediately rod member is shifted out coil.Induction heating makes the molten surface that is applied to rod member of powdered alloy, obtains the wearing-resistant rod piece material.
(5) selecting specification for use is 25 * 25 * 3 angle steel, adopts existing weldprocedure to prepare the square frame that the length of side is 700mm.A square edge of angle steel is positioned at a plane, and the right angle of angle steel is towards the inboard of framework.
(6) the wearing-resistant rod piece material that step (4) is prepared evenly is layed in step (5) framework and is positioned on the planar angle steel square edge, and the gap of the wearing-resistant rod piece and the framework angle steel straight vertical arm of angle is 5mm.The gap of adjacent wearing-resistant rod piece is 1mm.Adopt existing weldprocedure, the two ends and the framework of wearing-resistant rod piece is welded to connect, promptly make vibration sieve plate.
Claims (5)
1. the preparation method of the vibration sieve plate that resistance to wears, step is:
(1) selecting cross-sectional diameter for use is the rod member shape steel of 8 ~ 50mm, and the length of rod member shape steel is confirmed arbitrarily as required; And remove greasy dirt, the iron rust of rod member shape steel surface with mechanical means or chemical process;
(2) prepare powdered alloy coating with powdered alloy and caking agent;
(3) with ordinary method the powdered alloy coating of step (2) preparation evenly is coated to the said rod member shape steel surface of having removed surface and oil contaminant, iron rust of step (1), heating, drying then;
(4) adopt conventional induction heating equipment; The rod member that scribbles powdered alloy coating of step (3) preparation is passed through radio-frequency induction coil vertically downward; Utilize the said powdered alloy coating of induction heating sintering to make it to be affixed to the surface of rod member, make the bar material that resistance to wears;
(5) select angle steel for use, according to the size and dimension requirement of the vibration sieve plate of desire preparation, prepare the framework of vibration sieve plate with ordinary method, the square edge of wherein said angle steel is in the plane, and the right angle of angle steel is towards the inboard of framework;
(6) the wearing-resistant rod piece materials processed that step (4) is obtained becomes to be fit to the size of the said sieve plate framework of step (5), is fixed on the sieve plate framework with conventional welding process or mechanical fixation method, promptly gets the vibration sieve plate that resistance to wears;
It is characterized in that:
The said rod member shape of step (1) steel select 20#, 35#, 45#, Q235B, 40Cr or Q345B structural section;
The said method for preparing powdered alloy coating of step (2) is: selecting granularity for use is-40 orders～+ 300 order powdered alloys, in powdered alloy, adds the caking agent of powdered alloy quality 5%, mixes, and promptly gets powdered alloy coating; Wherein, The composition of said powdered alloy is by percentage to the quality: C is 3% ~ 3.6%, Cr is 28% ~ 32%, B is 1.5% ~ 2.5%, Si is 1.5% ~ 2.5%, Mo is 3.0% ~ 4.0%, Ni is 4.0% ~ 6.0%, surplus for Fe with do not influence the impurity of powdered alloy performance, and its fusing point is 1200 ~ 1250 ℃; Or C is 4.5% ~ 5.0%, Cr is 45% ~ 50%, B is 1.8% ~ 2.3%, Si is 0.8% ~ 1.4%, surplus for Fe with do not influence the impurity of powdered alloy performance, its fusing point is 1200 ~ 1280 ℃; Said caking agent is the mixture of organosilicon sealant, epoxy resin, Z 150PH or CMC 99.5 and two or more any mass ratio thereof;
The said powdered alloy coating of step (3) is 0.5 ~ 10mm at the coat-thickness of rod member shape steel surface; Heating temperature is 100 ~ 120 ℃, and be 0.2 ~ 2 hour heat-up time;
When the said induction heating of step (4) scribbled the rod member of powdered alloy coating, the fusing situation that observe rod member surface alloy powder coating when its surface demonstrates minute surface appearance light, shifted out coil with rod member immediately.
2. resistance to wear the according to claim 1 preparation method of vibration sieve plate, it is characterized in that: the said rod member shape of step (1) steel select Q235B, 40Cr or Q345B structural section.
3. resistance to wear the according to claim 1 preparation method of vibration sieve plate, it is characterized in that: the said caking agent of step (2) is organosilicon sealant, epoxy resin or CMC 99.5.
4. resistance to wear the according to claim 1 preparation method of vibration sieve plate is characterized in that: step (2) is said to be prepared in the method for powdered alloy coating, in caking agent, adds the fluorite powder of caking agent quality 0 ~ 6%.
5. like the preparation method of claim 1 or the 4 said vibration sieve plates that resistance to wear, it is characterized in that: step (2) is said to be prepared in the method for powdered alloy coating, in caking agent, adds the fluorite powder of caking agent quality 2.5 ~ 3.5%.
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| CN2206677Y (en) * | 1994-12-17 | 1995-09-06 | 洪湖市矿冶机械厂 | Herringbone type sieve plate for metallurgy and mine |
| CN1214372A (en) * | 1997-10-11 | 1999-04-21 | 余杭市瓶窑合金钢铸造厂 | Sieve plate for sorting stone material and its making method |
| CN101775474A (en) * | 2010-03-18 | 2010-07-14 | 唐山瑞兆激光技术机械修复有限公司 | Method for strengthening metal sieve plate by laser broadband remelting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19756580A1 (en) * | 1997-06-21 | 1998-12-24 | Samsung Heavy Ind | Highly wear resistant coated engine tappet |
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2011
- 2011-05-26 CN CN2011101388006A patent/CN102226278B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206677Y (en) * | 1994-12-17 | 1995-09-06 | 洪湖市矿冶机械厂 | Herringbone type sieve plate for metallurgy and mine |
| CN1214372A (en) * | 1997-10-11 | 1999-04-21 | 余杭市瓶窑合金钢铸造厂 | Sieve plate for sorting stone material and its making method |
| CN101775474A (en) * | 2010-03-18 | 2010-07-14 | 唐山瑞兆激光技术机械修复有限公司 | Method for strengthening metal sieve plate by laser broadband remelting |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平11-22424A 1999.01.26 |
| 唐银生等.热矿振动筛新型筛板的研制及应用.《烧结球团》.2002,第27卷(第5期),第47-50页. * |
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| CN102226278A (en) | 2011-10-26 |
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