AU2018256666B2

AU2018256666B2 - Cone crusher

Info

Publication number: AU2018256666B2
Application number: AU2018256666A
Authority: AU
Inventors: Zhenying Wang; Leigh Wings; Chunli Zhang
Original assignee: Resources Unity Enterprise Pty Ltd
Current assignee: Resources Unity Enterprise Pty Ltd
Priority date: 2018-07-09
Filing date: 2018-11-02
Publication date: 2021-01-28
Anticipated expiration: 2038-11-02
Also published as: AU2018256666A1

Abstract

CONE CRUSHER ABSTRACT The present disclosure belongs to the field of crusher technologies, and in particular, relates to a cone crusher liner with steel bonded hard alloy cast therein, wherein the liner comprises a mantle 3 and a bowl liner 2, both the mantle and the bowl liner are cones, the bowl liner fits outside of the mantle, a crushing chamber 4 is formed between the mantle 2 and the bowl liner 3, the inner surface of the bowl liner is a working surface of the bowl liner 4, and the outer surface of the mantle is a working surface of the mantle 5; and the liner further comprises steel bonded hard alloy columns 6, and the steel bonded hard alloy columns are cast into the working surface of the bowl liner and the working surface of the mantle. 1/2

Description

1/2

CONE CRUSHER

Related Applications

[0001] The current application claims priority from Chinese Utility Model No. 201821078834.4 filed 9 July 2018, which is herein incorporated by reference in its entirety.

Field

[0002] The present disclosure belongs to the field of crusher technologies, and in particular, relates to a cone crusher liner with steel bonded hard alloy cast therein.

Background

[0003] Cone crushers are applicable for crushing raw materials in industries like metallurgy, construction, road construction, chemicals and silicates. There are many models of the crushers according to various crushing principles and different product particle sizes. The crushers are extensively used in numerous sectors, including mines, metallurgy, construction materials, roads, railways, water conservation, and chemical industry. Cone crushers have high crushing ratio, high efficiency, low energy consumption, and uniform product particle sizes. They are applicable for crushing various ores and rocks to intermediate and fine particle sizes.

[0004] A chamber of a cone crusher is a working space formed by a mantel (moving cone) and a bowl liner (static cone). The quality of chamber design has a significant impact on economic and technical indexes of a crusher (productivity, energy consumption, particle size and particle shape of crushed products, abrasion to the mantel and the bowl liner, and the like). Therefore, a unique design is used to make the final product to have a relatively uniform particle size, a shape of cubes, and relatively uniform abrasion on the working surface of a moving cone.

[0005] Operating parameters of a crusher have a direct impact on moving characteristics of a material inside the crushing chamber, which is mainly embodied by the impact of rotating and swinging speed of a main shaft of the crusher on the moving state of a discrete material, thereby leading to a significant impact on the performance of the crusher (productivity, particle size distribution of crushed products, and the like).

[0006] The swing stroke of the crushing chamber of a cone crusher has a significant impact on the performance of the crusher. When the swing stroke is increased, the actual feed compression ratio is increased for all crushing layers in the crushing chamber, the quality of crushed products is improved, and the standard discharge particle size is increased; when the swing stroke is decreased, the actual feed compression ratio is decreased for all crushing layers in the crushing chamber, the quality of crushed products deteriorates, and the standard discharge particle size is decreased. To improve the quality of crushed products, maximum values are taken for swing stroke of all crushing layers in the crushing chamber.

[0007] Mantel and bowl liner of a cone crusher form working surfaces of the crusher, and ores are crushed in a crushing chamber formed by the mantel and the bowl liner. An outer surface of the mantle and an inner surface of the bowl liner are conventionally both smooth surface, and since they don't have sufficient hardness, the mantel and the bowl liner tend to be damaged in the process of hitting ores.

Summary of Invention

[0008] It is an object of the present invention to wholly or partly overcome one or more of the above disadvantages and drawbacks of the prior art, or at least to provide a useful alternative.

[0009] Embodiment(s) of the present invention seek to provide a cone crusher liner with steel bonded hard alloy cast therein to address that the hardness of the liner may not be sufficient, and the mantel and the bowl liner may tend to be damaged.

[0009a] According to an aspect of the present invention, there is provided a cone crusher liner with steel bonded hard alloy cast therein, the liner comprising: a mantle and a bowl liner, both the mantle and the bowl liner are cones, the bowl liner fits outside of the mantle, a crushing chamber is formed between the mantle and the bowl liner, an inner surface of the bowl liner is a working surface of the bowl liner, and an outer surface of the mantle is a working surface of the mantle; and steel bonded hard alloy columns cast into the working surface of the bowl liner and the working surface of the mantle, the steel bonded hard alloy columns being made of a titanium carbide steel bonded hard alloy, each of the steel bonded hard alloy columns being dimensioned and arranged based on an abrasion curve of the working surface of the bowl liner and an abrasion curve of the working surface of the mantle; wherein the hard alloy columns comprise 35-55%

2a

titanium carbide, 1.2-2.5% nickel powder, 1% molybdenum powder, 8% ferromanganese, 0.5% graphite powder, 32-52% water atomized iron powder and carbonyl iron powder, and 0.5% chromium carbide.

[0010] According to another aspect of the present disclosure, there is provided a cone crusher liner with steel bonded hard alloy cast therein, wherein the liner comprises a mantle and a bowl liner, both the mantle and the bowl liner are cones, the bowl liner fits outside of the mantle, a crushing chamber is formed between the mantle and the bowl liner, the inner surface of the bowl liner is a working surface of the bowl liner, and the outer surface of the mantle is a working surface of the mantle; and the liner further comprises steel bonded hard alloy columns, wherein the steel bonded hard alloy columns are cast into the working surface of the bowl liner and the working surface of the mantle.

[0011] Preferably, the hard alloy columns are made of a titanium carbide steel bonded hard alloy.

[0012] Preferably, the hard alloy columns of varying dimension selected according to different abrasion curves of the working surface of the mantle and the working surface of the bowl liner, different hardness of ores, and different particle sizes of incoming materials and discharge materials, the columns are regularly cast and arranged at certain center spacing, and the hard alloy columns are columns with a length of 40 mm-100 mm, a diameter less than 20-30 mm, and a center spacing of 40-60 mm.

[0013] Preferably, the hard alloy columns are columns with a top end surface and a bottom end surface being the same.

[0014] Preferably, the hard alloy columns have a length of 40 mm-100 mm and a diameter less than 20-30 mm.

[0015] Preferably, the hard alloy columns have a center spacing of 40-60 mm.

[0016] Preferably, the hard alloy columns are integrated with the working surface of the mantle and the working surface of the bowl liner, and the hard alloy columns extend above the working surfaces by 0.5 mm-i mm.

[0017] Embodiments of steel bonded hard alloys are made through a powder metallurgical process by using one or more carbides (commonly including TiC, WC, TaC, and NbC) as the hard phase and using high-speed steel or alloy steel as the bonding phase. The carbide phase results in excellent abrasion resistance and temperature resistance of the hard alloys, while the steel bonding phase offers processing properties for the hard alloys, including thermal processability, cutting processability, malleability, and solderability. Therefore, steel bonded hard alloys are a novel type of engineering materials between alloy steel and hard alloys.

[0018] Compared with tungsten carbide steel bonded hard alloys, titanium carbide-based steel bonded hard alloys may have a series of advantages: TiC has excellent physical and chemical properties, including high hardness, oxidation resistance, corrosion resistance, low specific weight, and good thermal stability; moreover, crystal grains have a low tendency to grow in the sintering process, and the crystal grains are typically round, such that the alloys have excellent performance in use and are a type of hard phase materials with relatively ideal properties. Another potential important advantage is that the sources of raw materials thereof are abundant, the manufacturing process is simple, the cost is low, the density is only 6.10 g/cm3 , and the carbon content in TiC can vary in a wide range, which may lead to great flexibility in terms of the composition.

[0019] In preferred embodiments, steel bonded hard alloy columns are provided on both the inner surface of the bowl liner and the outer surface of the mantle, which may improve the strength and hardness of the liner, may prevent damages to the bowl liner and the mantle by ores during ore crushing, may extend the service life of the bowl liner and the mantle, may reduce the maintenance cost, and may achieve excellent results in implementations. Embodiment(s) of the present invention may be favorable for extensive applications.

Brief Description of Drawings

[0020] Preferred embodiments of the invention will be described hereinafter, by way of example only, with reference to the accompanying drawings, wherein:

[0021] FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

[0022] FIG. 2 is a schematic structural diagram of a bowl liner according to an embodiment of the present invention;

[0023] FIG. 3 is a schematic structural diagram of a mantle according to an embodiment of the present invention.

[0024] Wherein: 1- bowl liner, 2- mantle, 3- crushing chamber, 4-working surface of the bowl liner, 5 - working surface of the mantle, and 6- hard alloy columns.

Detailed Description

[0025] A cone crusher liner with steel bonded hard alloy cast therein, comprising a mantle 2 and a bowl liner 1, wherein both the mantle 2 and the bowl liner 1 are cones, the bowl liner 1 fits outside of the mantle 2, a crushing chamber 3 is formed between the mantle 2 and the bowl liner 1, the inner surface of the bowl liner 1 is a working surface of the bowl liner, and the outer surface of the mantle 2 is a working surface of the mantle; and further comprising hard alloy columns 6, wherein the hard alloy columns 6 are cast into the working surface of the bowl liner and the working surface of the mantle.

[0026] The hard alloy columns 6 are made of a titanium carbide steel bonded hard alloy.

[0027] Hard alloy columns of different diameters and different lengths are selected according to different abrasion curves of the fixed working surface and the moving working surface, different hardness of ores, and different particle sizes of incoming materials and discharge materials, and the columns are regularly arranged at various center spacing. The hard alloy columns 6 are columns with a length of 40 mm-100 mm, a diameter less than 20-30 mm, and a center spacing of 40-60 mm.

[0028] The hard alloy columns 6 are columns with a top end surface and a bottom end surface being the same.

[0029] The hard alloy columns 6 have a length of 40 mm-100 mm and a diameter less than 20 30 mm.

[0030] The hard alloy columns 6 have a center spacing of 40-60 mm.

[0031] The hard alloy columns 6 are integrated with the fixed working surface and the moving working surface, and extend above the fixed working surface and the moving working surface by 0.5 mm-i mm.

[0032] The hard alloy columns 6 contain 35-55% titanium carbide, 1.5-2.5% nickel powder, 1% molybdenum powder, 8% ferromanganese, 0.5% graphite powder, 32-52% water atomized iron powder and carbonyl iron powder, and 0.5% chromium carbide.

[0033] In practical operations, steel bonded hard alloys of different materials need to be selected according to different depths of abrasion surfaces, different abrasion mechanisms, and different actual situations of mines, and steel bonded hard alloys having different contents of titanium carbide need to be selected according to abrasion curves, so as to ensure overall flexural strength and hardness of a liner.

[0034] Steel bonded hard alloys are a novel type of hard alloys that are developed based on hard alloys. Steel bonded hard alloys are a type of steel-based composite materials made through a powder metallurgical process by using steel as the bonding phase and a hard compound as the hard phase.

[0035] The hard phase TiC of a steel bonded hard alloy has high hardness (3200 HV), high melting point (3150 degrees), and stability at high temperature, leading to advantages including high hardness, good adhesion resistance, and good abrasion and heat resistance. Due to these performance characteristics, steel bonded hard alloys have been extensively used on abrasion resistant products. As the quality of rare metal resources, such as tungsten and cobalt, deteriorates and the quantity thereof becomes increasingly scarce in China, it will certainly be an important development trend in the future that steel bonded hard alloys are used as substitutes for hard alloys.

[0036] An example process for preparing the hard alloy columns according to the present invention is provided below:

[0037] Step I: preparation of steel bonded hard alloy columns. First, a steel bonded hard alloy powder is ground and pressed into a desired size and shape, and is molded through sintering for later use;

[0038] Step II: preparation of a sand mold. Bury a mold into a sand box to prepare a mold chamber, and then nail the prepared steel bonded hard alloy columns into the sand on the side of the mold chamber via steel nails welded thereto, to secure the steel bonded hard alloy columns, and control the temperature of the sand box constant in the range of 200°C-400°C;

[0039] Step III: casting. First, smelt the mantle and the bowl liner according to their chemical compositions, then heat the mold chamber secured with the steel bonded hard alloy columns, and pour the smelted metal liquid into the heated mold chamber to complete casting;

[0040] Step IV: knock-out. Perform knock-out and sand shakeout to obtain a composite panel, then cut off the steel nails, clean sand off the liner surface, and polish and make the liner surface smooth;

[0041] Step V: thermal treatment. Place the polished liner into a heating oven and heat to 1080°C, keep the temperature constant for 2-3 hours, then take out the liner and quickly place it into water, and when it is cooled to a predetermined temperature, take out the liner to end the process.

[0042] The embodiments of the present invention have been described in detail above, but they are only preferred embodiments of the present invention, which shall not be regarded as limitations to the implementation scope of the present invention. Any equivalent variations and improvements made within the scope of the present disclosure shall be encompassed by the present invention.

Claims

1. A cone crusher liner with steel bonded hard alloy cast therein, the liner comprising: a mantle and a bowl liner, both the mantle and the bowl liner are cones, the bowl liner fits outside of the mantle, a crushing chamber is formed between the mantle and the bowl liner, an inner surface of the bowl liner is a working surface of the bowl liner, and an outer surface of the mantle is a working surface of the mantle; and steel bonded hard alloy columns cast into the working surface of the bowl liner and the working surface of the mantle, the steel bonded hard alloy columns being made of a titanium carbide steel bonded hard alloy, each of the steel bonded hard alloy columns being dimensioned and arranged based on an abrasion curve of the working surface of the bowl liner and an abrasion curve of the working surface of the mantle; wherein the hard alloy columns comprise 35-55% titanium carbide, 1.2-2.5% nickel powder, 1% molybdenum powder, 8% ferromanganese, 0.5% graphite powder, 32-52% water atomized iron powder and carbonyl iron powder, and 0.5% chromium carbide.

2. The cone crusher liner with steel bonded hard alloy cast therein according to claim 1, wherein each of the hard alloy columns has a diameter and length determined based on the abrasion curves of the working surface of the mantle and the working surface of the bowl liner, hardness of ores, and particle sizes of incoming materials and discharge materials.

3. The cone crusher liner with steel bonded hard alloy cast therein according to claim 1 or 2, wherein the hard alloy columns are regularly cast into the working surfaces at certain center spacing.

4. The cone crusher liner with steel bonded hard alloy cast therein according to claim 2 or 3, wherein the hard alloy columns are selected from columns with a length of about 30 mm-100 mm, a diameter less than 30 mm, and an arrangement center spacing of 40-60 mm.

5. The cone crusher liner with steel bonded hard alloy cast therein according to any one of claims 1-4, wherein the hard alloy columns are columns with a top end surface and a bottom end surface being the same.

6. The cone crusher liner with steel bonded hard alloy cast therein according to claim 1 or 5, wherein the hard alloy columns have a length of 40mm-100mm and a diameter less than 30 mm.

7. The cone crusher liner with steel bonded hard alloy cast therein according to claim 1, 5 or 6, wherein the hard alloy columns are arranged at a center spacing of 40-60 mm.

8. The cone crusher liner with steel bonded hard alloy cast therein according to any one of claims 1-7, wherein the hard alloy columns are integrated with the working surface of the mantle and the working surface of the bowl liner, and the hard alloy columns extend beyond the working surfaces by 0.5 mm-i mm.

Parksen Group Pty Ltd

Patent Attorneys for the Applicant/Nominated Person

SPRUSON&FERGUSON