grinding equipment - ceramic ball mill manufacturer from ahmedabad
The ball mill is a key equipment for grinding materials, widely used in powder-making production line such as cement, silicate sand, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. Ball mill can grind various ores and materials with dry type or wet type. There are two kinds of ball mills, grate type and overfall type due to different ways of discharging material.
Ball mill is the key equipment for grinding after the crushing process, which is widely used in the manufacture industries, such as cement, silicate, new building material, refractory material, fertilizer, ferrous metal, nonferrous metal and glass ceramics and can be used for the dry and wet grinding for all kinds of ores and other grind-able materials.
This machine is a skeleton pattern ball mill with horizontal cylindrical turning gear, driven by outer gear and two hoppers. The material goes to the first hopper after the spiraling by the quill shaft from the feeding equipment. The hopper has ladder sheathing or corrugated sheathing with steel balls inside, which will fall under the effect of centrifugal force by barrel and grind material. After the kibbling in the first hopper, by monolayer partition panel, the material will enter the second hopper, which has plane scale board with steel ball inside to grind material. The powder material will be discharged from the grid plate to finish the grinding.
The machine is composed by feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbing process and the drum is equipped with wear-resistant liner, which has good wear-resistance. The machine is with stable and reliable working condition.
shandong shengye grinding bal co, ltd
Shandong ShengyeGrinding Ball Co., Ltd. is a professional factory specializing in the production and sale of grinding steel balls and grinding steel bars for ball mills and rod mills. The company covers an area of more than 20,000 square meters, more than 80 professional training staff, annual output of 100,000 tons, the products are exported to more than 30 countries overseas, customers are mainly concentrated in Southeast Asia, South America, Africa, mining, cement plants and The thermal power plant is well received by customers. With a professional technical testing and technology research and development team...
cement grinding balls - importer and supplier in morbi, gujarat india
The high-purity and ultra-finea-alumina powderproduced by Jingang Microcrystalline Wear-resistant AluminumOxide is the main raw material, and is prepared by powder (slurry and mud)dry pressing, isostatic pressing (dry method, wet method), etc. A molding method to produce semi-finished products of alumina ceramic products tunnel kiln firing and other dozens of King Kongs unique process, resulting in excellent product performance.Diamond aluminum products with wear resistance, impact resistance, corrosion resistance, high temperature, and other excellent performance, energy saving, environmental protection, reduce consumption, extend the service life of equipment, energy indicators to reach the leading domestic and international advanced level.According to the inspection of National Building Material Industry Ceramics Supervision, Inspection and Test Center, all the performance indexes of the products are better than the industry standards, with Mohs hardness of nine, density of 3.62g/cm3, equivalent wear of <0.01 ; wear resistance is significantly higher than the current Commercial alumina ceramics are 1 to 2 orders of magnitude.King Kongs microcrystalline wear-resistant alumina liner passed the appraisal of the Shandong Provincial Department of Science and Technology.The results of the appraisal opinion that: microcrystalline wear-resistant alumina liner product quality reached the international advanced level.Based on the technology of this product, 2 national invention patents have been declared and 1 utility model patent and 3 design patents have been authorized.In 2012, Jingang Brand Ceramic Products won the Shandong Famous Brand.
Diamond alumina special new material products account for40% ofthe globalmarket share. Production and sales volume ranks first in the aluminum oxide wear industry for many years, and it has become the worlds first.
steel ball made in different process methods and different making machine comparison
Casting Steel Ball Manufacturing Process
Due to the natural solidification of molten steel, the cast steel balls will inevitably have defects such as loose internal structure and air holes after forming, which will lead to brittle, eccentric wear and out of round phenomena in the use of steel balls. The quality of cast steel ball mainly depends on the content of chromium. In recent years, the price of chromium has gone up all the way and environmental protection and other factors have led to the increasing cost of cast steel ball.
Using high manganese steel as the raw material, using air hammer to install the spherical mold for forging, which has the characteristics of small investment and fast starting, but high dependence on people.
The forged steel ball has all the attributes of forging, so the quality is the best in these kinds of steel ball manufacturing processes. Generally, the steel ball making machine used is air hammer, which has the advantages of small investment and fast starting, but it has strong artificial dependence and low production efficiency.
The surface quality of the forged steel ball, the impact resistance, and the wear resistance are all good, the toughness is strong, and it is not easy to be broken and loss round. We use forging and press methods, which can heat the metal until the temperature reaches 1100C(50C), and use the forging machine to apply pressure to the metal blank to plastically deform it to obtain the forging with certain mechanical properties, shape and size. method.
Through forging, defects such as as-cast looseness caused by metal in the smelting process can be eliminated, optimize the microstructure, and at the same time, the mechanical properties of the forgings are generally better than those of the same materials due to the preservation of the complete metal flow lines.
Forged steel balls are precise in size, high in roundness, high in hardness, and have mechanical properties. It is wear resistant, not easily deformed and broken. It can be fully reflected by the high hardness. The surface hardness is as high as 57hrc to 67hrc, the volume and hardness are as high as 56hrc to 64hrc, the hardness distribution is uniform, the impact toughness is more than 12j/cm2, the breakage rate is low, and the anti-fatigue drop test is more than 20,000 times. The actual damage is caused. The rate is no more than 1%, close to 0.
We have made a comparison between the cast steel ball and our forged steel ball. The results of the two are 0.9kg/t and 0.6kg/t respectively in domestic iron mines. From the data, we can see that using forged steel balls, the consumption of one ton of ore is reduced by 33.3%.
Using high manganese steel bar as raw material and using the rolling mill with special spiral hole mould for production, the production efficiency is high, the automation degree is high, but the investment cost is also high.
The bar used for rolling the ball is rolled, so the structure of the ball is relatively uniform. However, the rolling process only shears and rubs the bar, which does not meet the requirements of forging ratio, so it does not have the properties of forging completely. The production equipment used is the production line of steel ball skew rolling mill, which has the characteristics of high production efficiency and full-automatic production.
Although the quality of forged steel ball is good, but ouput is low and rely on much of labor. In order to solve this problem, Anyang Forging Press has developed the technology of forging-rolling by combining forging automation with practical experience of steel ball production. The process combines the characteristics of forging and rolling steel balls, and takes CNC die forging hammer or electric screw press as the core steel ball making machine, matching bar cutting machine, forging manipulator, rounding machine and other equipment to achieve full-automatic and efficient production of forged steel balls.
The Spring Festival holiday has just ended, and Anyang Forging Press's orders have come one after another. All the employees ushered in a full-blown working day. In the various workshops of Anyang Fo......
Riveting machine is a kind of mechanical equipment that can riveting objects together. The riveting machine mainly relies on rotation and pressure to complete the assembly. There are many types of ri......
Just after the Spring Festival, and the strong flavor of the New Year has not yet completely dissipated, the various production lines of Anyang Forging Press have been fully started. The machines in t......
Forging is a characteristic material shaping process where material forming takes place by hammering the material into a characteristic shape. Traditionally, all forging processes are manual or powere......
In order to thoroughly implement the strategy of strengthening the city by quality, establish the concept of pursuing excellence in quality, promote the city’s high-quality economic and social d......
1. What is an air hammer
Air Hammer, also known as Pneumatic Hammer, Power Hammer, is a kind of free forging machine. It is suitable for all kinds of free forging: such as extension, upsetting, punch......
On January 15, 2021, Anyang Forging Press's 2020 commendation meeting was grandly held in the company's conference room.
The first item of the meeting was addressed by the chairman of the company Li......
Metal Casting and Metal Forging are two widely used processes for shaping metals.
Forged products generally have improved mechanical properties and higher ductility as compared to casted products. For......
With the rapid development of industrial technology, market competition in the forging industry has become increasingly fierce, which puts forward newer and higher requirements for forging equipment a......
Joy is accompanied by sweat, success is accompanied by hardships, and regrets inspire struggle. On the occasion of the 2021 New Year, on behalf of Anyang Forging Press company's board of dire......
manufacture process of rolling ball, forging ball and casting balls - ningguo hexin
Air Hammer forging steel ball main production process: Round steel bars are cut according to ball size after passing the inspection; Steel is heated to a certain temperature by a medium frequency furnace to ensure an effective forming variable in the forging; the red-hot steel forging is fed into an air hammer and is knocked over by a skilled operator. After forging, the red-hot steel balls are quenched and tempered immediately in the heat treatment equipment to obtain high and uniform hardness.
Thecastinggrinding ball is a kind of grindingballs which uses the medium frequency electric furnace tomeltthe scrap steel, scrap iron and so on.The furnace charge is fully melted and the precious metal alloy (such as ferrochromium, Ferromanganese, ferrovanadium, etc.) is added to the furnace for chemical composition conditioning.After heating,the qualified molten iron is poured into the steel ball metal mold or automatic steel ball production lines moldwhen the molten iron temperature reaches above 1550Cso thatmeets the technical requirements.
After molding, then start to heat treatment. It includes quenching parts and tempering parts. For quenching, it alsodivides into oil quench, air quench according to the different composition of balls.
For casting grinding balls, there are also two types. One isthe white cast iron with chromium as the main alloy element, which is called Chromium Alloy cast iron. It means the ballsmade of chromium alloy cast iron(chrome grinding balls); another typeismade of nodularcast iron (called nodular cast iron grinding ball).The Matrix obtained by heat treatment is mainly Bainite spheroidal graphite cast iron grinding ball referred to as Bainite spheroidal graphite iron grinding ball; The Matrix obtained by heat treatment is mainly a martensite spheroidal graphite cast iron grinding ball referred to as the Martensite Ball.
The grinding balls, including casting type and forging type, widely used in metallurgical mines, cement building materials, thermal power generation, flue gas desulphurization, magnetic materials, chemicals, coal-water slurry, pellets, slag, ultra-fine powder, fly ash, calcium carbonate, quartz sand and other industries ball mill.
differences between cast and forged grinding ball?
The ball mill grindingball on the market now can be divided into two kinds according to the manufacturing process: Cast grindingBall and forged steel ball, but their wear degree is not the same. Due to crushing and pulverizing materials, grindingballs need good abrasion resistance and enough impact toughness, and require steel balls cannot be broken, ball mill grindingballs can be divided into:
1. Quality index of High Chromium grinding balls: Chromium content 10.0%-12.0 %, carbon content between 1.80%-3.20% are called high chromium grinding balls, the national standard requires hardness (HRC) of high chromium grindingballs 58, impact value AK 3.0 j / 2. If the hardness high chromium grindingball must adopt high-temperature quenching + tempering treatment (at present domestic high chromium grindingball quenching oil quenching, wind quenching, water solution, and other quenching methods), if the hardness (HRC) is below 54, then the high chromium grindingball has not been quenched.
2. Ultra-high Chromium grindingBall Quality Index: Chromium contents12.0%-28.0 %, carbon contentsbetween 1.80%-3.30% are all called high chromium grindingball, the national standard requires high chromium grindingball hardness (HRC) must 58, impact value AK 3.0 j / 2.If the hardness of the ultra-high Chromium grindingBall must adopt high-temperature quenching + tempering treatment (at present, there are two quenching methods of oil quenching and wind quenching for ultra-high Chromium grindingBall), if the hardness (HRC) is below 54, the ultra-high chromium grindingball has not been quenched.
3. Medium Chromium grindingBall Quality Index: the chromium content is 3.0-7.0 %, the carbon content is 1.80%-3.20% is called medium chromium grinding ball, the national standard request medium chromium grinding ball hardness (HRC) must 47 above, the impact value AK 2.0 j /cm 2, high-temperature tempering or vibratory stress relief (VSR) is used to improve the quality of grinding balls. If the grinding ball surface dark red indicates that the product has been high-temperature tempering, if the grinding ball surface is still metallic color indicates that the product is not high-temperature tempering.
4. Low Chromium Grinding Balls Quality Index: containing 0.5% ~ 2.5% chromium, containing 1.80% ~ 3.20% carbon are called low chromium grinding balls, national standard requirements low chromium grinding balls hardness (HRC) must 45, impact value AK 1.5 j /2. In order to ensure the quality of grinding ball, low chromium grinding ball should be tempered at high temperature or vibratory stress relief (in order to eliminate casting stress). If the grinding ball surface dark red indicates that the product has been high-temperature tempering, if the grinding ball surface is still metallic color indicates that the product is not high-temperature tempering.
5.Quality Index of forged steel balls: 0.1% ~ 0.5% chromium content (forged steel balls generally do not contain chromium) , carbon content is below 1.0% and steel balls are made of high temperature forging Some forging steel ball surface hardness (HRC) although can reach 56 above (quenching layer only about 15) , because the forging steel ball material hardenability is poor the core hardness is generally only more than 30 degrees. Under normal conditions, water quenching is often used for forging steel balls, so the broken rate of forged steel balls is very high.