CN102350388A - Special high chromium rolling wall and assembly for conical sand making machine - Google Patents
Special high chromium rolling wall and assembly for conical sand making machine Download PDFInfo
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- CN102350388A CN102350388A CN2011102929131A CN201110292913A CN102350388A CN 102350388 A CN102350388 A CN 102350388A CN 2011102929131 A CN2011102929131 A CN 2011102929131A CN 201110292913 A CN201110292913 A CN 201110292913A CN 102350388 A CN102350388 A CN 102350388A
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- mortar wall
- rolled mortar
- high chromium
- cast iron
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Abstract
The invention relates to a special high chromium rolling wall and assembly for a conical sand making machine. In the rolling wall and assembly provided by the invention, high chromium white wear-resistant cast iron is applied to manufacturing of the rolling wall of the conical sand making machine and the wear resistance of the rolling wall is improved by multiple times. The special high chromium rolling wall comprises a rolling wall assembly, wherein the rolling wall is made of the high chromium white wear-resistant cast iron; and the content of the chromium in the rolling wall is more than or equal to 9 percent and less than or equal to 32 percent. The rolling wall has the advantages that 1, the wear resistance of the rolling wall is greatly improved and is five times that of the conventional high manganese and steel rolling wall, so the service life of the rolling wall is prolonged greatly and the use cost of a user is reduced greatly; and 2, the impact resistance of the high chromium white wear-resistant cast iron rolling wall is improved by using a physical structure, an impact force on the high chromium white wear-resistant cast iron rolling wall is relieved effectively, and the defect that the high chromium white wear-resistant cast iron rolling wall is easy to damage is overcome.
Description
Technical field
The present invention relates to a kind of making that the high chromium white antifriction cast iron is used for cone sand making machine rolled mortar wall assembly; Make the special-purpose high chromium rolled mortar wall of cone sand making machine and the assembly of the abrasion resistance raising several times of rolled mortar wall, belong to cone sand making machine rolled mortar wall assembly and make the field.
Background technology
Be in the high cast iron of 3c one 21cr of theoretical research stage at present, in conjunction with all kinds of tups of disintegrating machine, the bimetallic composite hammer head that 3c one 21Cr rich chromium cast iron and all kinds of carbon steel (containing 45# cast steel, 35# cast steel, 30# cast steel), potassium steel, low-alloy steel etc. are formed." biliquid " double-metal composite casting process that adopts in the research and the Technology for Heating Processing of composite casting have guaranteed that bimetallic combines the metallurgical binding and the metallurgical quality at position; The binding site of guaranteeing bimetallic material simultaneously is the boundary; Each person still keeps the characteristic of each person's metal material, makes the bimetallic composite hammer head in use reach safe, reliable, durable, economic target.But this method can't be used for the manufacturing of cone sand making machine rolled mortar wall and rolled mortar wall assembly, and rolled mortar wall is prone to cause the breakage of rolled mortar wall in the power that receives when impacting in the slowly-releasing system of the having no idea sand process, uses the utmost point life-span short.
Summary of the invention
Purpose of design: avoid the weak point in the background technology, design a kind of high-wearing feature that both had, have special-purpose high chromium rolled mortar wall of long-life cone sand making machine and rolled mortar wall assembly again.
Design: in order to realize above-mentioned purpose of design.1, the wear-resistant sleeve in the rolled mortar wall adopts the design that the high chromium white antifriction cast iron is made, and is one of technical characterictic of the present invention.The purpose of doing like this is: the M that contains high rigidity in the high-chromium white cast iron tissue
7C
3Type eutectic carbide (20-30%); The characteristics that show the high-wearing feature part; Yet fracture in use appears in the low parts of hard and crisp toughness; Unreliable, dangerous phenomenon such as fragmentation; Had a strong impact on the rich chromium cast iron scope of application with good abrasion resistance, toughness, the high performance of improving rich chromium cast iron is to smelt the worker to make every effort to the problem that solves for a long time.Round this problem anxious to be solved; Done a large amount of work both at home and abroad; Its common ground is to attempt to change the shape (spheroidizing, group's nodularization, vermiformization etc.) of eutectic carbide; Change in the cast iron graphite and have form (flake graphite changes over spherical or rolls into a ball cotton-shaped or vermiform etc.) and bring the effect nl that increases substantially the cast iron mechanical property to obtain being similar to; Yet result of study is not ideal enough; Instability can't be used for suitability for industrialized production.Secondly; In the high-chromium white cast iron matrix; Because the eutectic carbide of the chromium of high rigidity is separated out in dispersion; Show higher hardness and good shock-resistant abrasive wear ability; Yet owing to contain the existence of the eutectic carbide of the higher chromium of 20-30% high rigidity fragility in the microscopic structure; This toughness of material can be said to be lower; In the strong abrasive wear environment of HI high impact; Its serviceability is dangerous; Unreliable, therefore; The cast iron of Gao Ge can't be used for HI high impact wearing and tearing field so far, also receives very big restriction in HI high impact abrasive wear Application for Field.2, the packed layer between rolled mortar wall and the rolled mortar wall backing plate is the design of zinc alloy layer, is two of technical characterictic of the present invention.The purpose of doing like this is: kirsite is to be that the basis adds the alloy that other elements are formed with zinc.The alloying element that often adds has low temperature kirsites such as aluminium, copper, magnesium, cadmium, lead, titanium.The kirsite characteristics are: fusing point is low; Good fluidity; Be prone to melting welding; Soldering and plastic working; Corrosion-resistant in atmosphere, the present invention utilizes the These characteristics of kirsite just, and the kirsite of fusion is poured between rolled mortar wall and the rolled mortar wall backing plate; Gap between rolled mortar wall and the rolled mortar wall backing plate is filled by the kirsite densification fully, form the kirsite packed layer.This kirsite packed layer not only has the characteristic of general zinc die casting alloys; And intensity is high; Good casting property, cooling velocity does not have obvious influence to mechanical property, and cast gate is simple; To overheated insensitive with remelting; Therefore shrinkage factor is little, and pore is few, receives the outside when going out when rolled mortar wall; The impact that the rolled mortar wall of its tapering circulus itself can make the part receive is shifted moving rolled mortar wall and all and through intermediate filling layer is absorbed, thereby reaches the breakage of avoiding the high chromium white antifriction cast iron through frame for movement.3, the rolled mortar wall backing plate adopts potassium steel to make, and is three of technical characterictic of the present invention.The purpose of doing like this is: when the potassium steel of austenite structure received shock loading, plastic deformation took place in the metal surface, and the result of working hardening has tangible work hardening phenomenon in deformation layer, and surface hardness increases substantially.When hanging down shock loading, HB300~400 can be reached, during high impact loads, HB500~800 can be reached.With the difference of shock loading, the cementation zone degree of depth can reach 10~20mm.The hardened layer of high rigidity can be resisted impact abrasive wear.Because of potassium steel under thump abrasive wear condition; Excellent abrasion resistance is arranged; The present invention is with this backing plate as high chromium white antifriction cast iron rolled mortar wall; Not only can form good wear-resisting coupling with high chromium white antifriction cast iron rolled mortar wall; And potassium steel has good toughness; It is the impulsive force that receives of slowly-releasing high chromium white antifriction cast iron rolled mortar wall effectively, avoids the breakage of high chromium white antifriction cast iron rolled mortar wall.
Technical scheme 1: the special-purpose high chromium rolled mortar wall of a kind of cone sand making machine, it comprises the rolled mortar wall assembly, and said rolled mortar wall material is the high chromium white antifriction cast iron, and its chromium content is equal to or greater than 9%, is equal to or less than 32%.
Technical scheme 2: the special-purpose high chromium rolled mortar wall assembly of a kind of cone sand making machine, it comprises rolled mortar wall and rolled mortar wall backing plate, the gap packed layer between said high chromium white antifriction cast iron rolled mortar wall and the rolled mortar wall backing plate is a zinc alloy layer.
Technical scheme 3: the special-purpose high chromium rolled mortar wall preparation method of a kind of cone sand making machine; ⑴ high chromium white antifriction cast iron rolled mortar wall and the cast form of rolled mortar wall backing plate; Carry out fine finishining then, and have many pouring grooves that are used to water kirsite at rolled mortar wall backing plate and high chromium white antifriction cast iron rolled mortar wall matching surface; ⑵ high chromium white antifriction cast iron rolled mortar wall and the rolled mortar wall backing plate after with the fine finishining suit that coincide; Then with the kirsite fused solution; Pour in the gap or cavity between high chromium white antifriction cast iron rolled mortar wall and the rolled mortar wall backing plate from many pouring grooves then, get final product behind the cooling forming.
The present invention compares with background technology, and the one, the rolled mortar wall anti-wear performance improves greatly, and its wearability is about 5 times of present potassium steel rolled mortar wall, not only prolong greatly service life, and user's use cost reduces significantly; The 2nd, realized having improved the impact resistance of high chromium white antifriction cast iron rolled mortar wall with the structure of physics, effectively slowly-releasing the suffered impulsive force of high chromium white antifriction cast iron rolled mortar wall, solved the be hit defective of cracky of high chromium white antifriction cast iron rolled mortar wall.
Description of drawings
Fig. 1 is the partial structurtes sketch map of high chromium white antifriction cast iron rolled mortar wall.
Fig. 2 is an A-A sectional structure sketch map among Fig. 1.
The partial structurtes sketch map of Fig. 3 rolled mortar wall backing plate.
A-A sectional structure sketch map among Fig. 4 Fig. 4.
Fig. 5 is the structural representation of the kirsite perfusion of rolled mortar wall and rolled mortar wall backing plate formation.
The specific embodiment
Embodiment 1: with reference to attaching Fig. 1 and 2.The special-purpose high chromium rolled mortar wall of a kind of cone sand making machine; It comprises the rolled mortar wall assembly; Said rolled mortar wall 1 material is the high chromium white antifriction cast iron; Its chromium content is equal to or greater than 9%; Be equal to or less than 32%; Promptly 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30, and comprise the decimal point between two integers.
Embodiment 2: with reference to accompanying drawing 1-4.The special-purpose high chromium rolled mortar wall assembly of a kind of cone sand making machine, it comprises rolled mortar wall and rolled mortar wall backing plate, the gap packed layer between said high chromium white antifriction cast iron rolled mortar wall 1 and the rolled mortar wall backing plate 3 is a zinc alloy layer 2.Said rolled mortar wall 1 has many pouring grooves 4 that are used to water kirsite with the matching surface of rolled mortar wall backing plate 3.Said rolled mortar wall backing plate 3 adopts potassium steel to make.Said rolled mortar wall backing plate 3 has many pouring grooves 4 that are used to water kirsite with the matching surface of high chromium white antifriction cast iron rolled mortar wall 1.
Embodiment 3: with reference to accompanying drawing 5.On the basis of embodiment 1 and 2; The special-purpose high chromium rolled mortar wall preparation method of a kind of cone sand making machine; It is characterized in that: ⑴ high chromium white antifriction cast iron rolled mortar wall 1 and 3 cast forms of rolled mortar wall backing plate; Carry out fine finishining then, and have many pouring grooves 4 that are used to water kirsite at rolled mortar wall backing plate 3 and high chromium white antifriction cast iron rolled mortar wall 1 matching surface; ⑵ the high chromium white antifriction cast iron rolled mortar wall 1 after with fine finishining carries out suit with rolled mortar wall backing plate 3; Then with the kirsite fused solution; Pour in the gap or cavity between high chromium white antifriction cast iron rolled mortar wall 1 and the rolled mortar wall backing plate 3 from many pouring grooves then, get final product behind the cooling forming.Said kirsite is the gravity cast zinc alloy.
What need understand is: though the foregoing description is to the mentality of designing of the present invention detailed text description of contrasting; But these text descriptions; Just the simple text of mentality of designing of the present invention is described; Rather than to the restriction of mentality of designing of the present invention; Any combination, increase or modification that does not exceed mentality of designing of the present invention all falls in protection scope of the present invention.
Claims (7)
1. the special-purpose high chromium rolled mortar wall assembly of a cone sand making machine, it comprises the rolled mortar wall assembly, it is characterized in that: said rolled mortar wall material is the high chromium white antifriction cast iron, its chromium content more than or equal to or 9%, be equal to or less than 32%.
2. the special-purpose high chromium rolled mortar wall assembly of a cone sand making machine, it comprises rolled mortar wall and rolled mortar wall backing plate, it is characterized in that: the gap packed layer between said high chromium white antifriction cast iron rolled mortar wall and the rolled mortar wall backing plate is a zinc alloy layer.
3. the special-purpose high chromium rolled mortar wall assembly of cone sand making machine according to claim 2, it is characterized in that: the matching surface of said high chromium white antifriction cast iron rolled mortar wall and rolled mortar wall backing plate has many pouring grooves that are used to water kirsite.
4. the special-purpose high chromium rolled mortar wall assembly of cone sand making machine according to claim 2 is characterized in that: said rolled mortar wall backing plate adopts potassium steel to make.
5. the special-purpose high chromium rolled mortar wall assembly of cone sand making machine according to claim 2, it is characterized in that: the matching surface of said rolled mortar wall backing plate and high chromium white antifriction cast iron rolled mortar wall has many pouring grooves that are used to water kirsite.
6. the special-purpose high chromium rolled mortar wall preparation method of a cone sand making machine; It is characterized in that: ⑴ high chromium white antifriction cast iron rolled mortar wall and the cast form of rolled mortar wall backing plate; Carry out fine finishining then, and have many pouring grooves that are used to water kirsite at rolled mortar wall backing plate and high chromium white antifriction cast iron rolled mortar wall matching surface; ⑵ high chromium white antifriction cast iron rolled mortar wall and the rolled mortar wall backing plate after with fine finishining carries out suit; Then with the kirsite fused solution; Pour in the gap or cavity between high chromium white antifriction cast iron rolled mortar wall and the rolled mortar wall backing plate from many pouring grooves then, get final product behind the cooling forming.
7. the special-purpose high chromium rolled mortar wall preparation method of cone sand making machine according to claim 6, it is characterized in that: said kirsite is the gravity cast zinc alloy.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102441456A (en) * | 2011-09-30 | 2012-05-09 | 浙江双金机械集团有限公司 | High-chromium cast iron cone sand making machine and manufacture method of high-chromium rolling mortar wall assembly |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102441456A (en) * | 2011-09-30 | 2012-05-09 | 浙江双金机械集团有限公司 | High-chromium cast iron cone sand making machine and manufacture method of high-chromium rolling mortar wall assembly |
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Application publication date: 20120215 |