COMPANY PROFILE
Integrating research and development, manufacturing and trade, STONE ABRASIVE has been engaged in the stones abrasive and diamond tools business for more twenty years. Adhering to the principle of valuing reputation and quality first, we are devoting ourselves to the full commitment to our clients of stone processing. Supported by a strong R&D team, we have been continuously renovating the technology of our products to satisfy any requirement from the clients to our utmost.
Our goal is to satisfy the clients.
Composition:
There are three types of marble abrasive which are magnesia type, colophony type and 5 Extra for polishing. The magnesia abrasive is made from high-quality magnesia, Silicon Carbide with different thickness and ratio as well as other compounds, used to achieve good planeness by removing the kerf in marble slabs made by saw blades. The colophony type is made from synthetic resin and silicon carbide of high acutance, used to abrade visible scratch and give certain polish to the slabs. The 5 Extra is made from high quality alumina and polishing materials under high-pressure treatment, used for mirror polishing and embellishment. Together with colophony abrasives, it can reach perfect result without any scratches or defects.
Granularity:
The granularity of our products meets the ISO8486 standard.
The specifications are 0#, 1#, 2#, 3#, 4#, 320#, 3/4F, 400#, 4F, 600#, 800#, 1000#, 2000#, and 5 Extra (polishing material), which can be classified to the following groups:
Rough abrasion: 0# - 4#
Medium abrasion: 320# - 400#
Refined abrasion: 600# - 2000#
5 Extra: different composition is to be applied to different stones
Application:
Compared with granite, marble processing requires stricter techniques due to its own features. No impurities harder than stones is allowed to mix when preparing raw materials or during the production of abrasive. The pureness and PH value of cooling water has to meet the requirement. The difference of chemical composition and hardness of marbles demands accordingly designed composition and combination and sequence of abrasive, which is the guarantee of top operation speed of polishing machines and the best processing effects to the stones that include not only invisible scratch and burn in slabs, but also ideal polish and embellishment. To completely eliminate scratches, the scratches produced by the same specification of abrasive have to remove those produced by less refined abrasive used earlier before finer abrasive to be applied with reasonable combination of abrasive, speed of belt, speed of swing and pressure of abrasive heads. Otherwise, the scratches can not be eliminated in the next procedures. To avoid burn, correct pressure of abrasive heads and flow of cooling water have to be chosen. The glossiness is depend on the material quality priorly. While an ideal glossiness to each stone can also be achieved by a correct combnation of abrasive and technical parameters. Based on the polishing mechanism to marble, the perfect combination of Extra 5 plus cleaning is designed which produce excellent polishing performance and long term mirror effect.
Generally speaking, the processing of high quality marble requires good abrasives and skillful operators.
Composition:
There are two types of granite abrasive, which are magnesia type and colophony type. The magnesia type is made from high-quality magnesia, Silicon Carbide with different thickness and ratio and other compounds, used to abrade granite slabs. The colophony type is made from synthetic resin mixed with high quality polishing materials, applied to slab polishing.
Granularity:
The granularity of our products meets the ISO8486 standard.
The specifications are, 14#, 16#, 24#, 36#, 46#, 60#, 80#, 120#, 150#, 180#, 240#, 320#, 400#, 600#, 800#, 1000#, 1200#, 1500#, 1800#, LUX (polishing abrasive), which can be classified to the following groups:
Rough abrasion: 14# - 80#
Medium abrasion: 100# - 320#
Half-refined abrasion: 360# - 800#
Refined abrasion: 1000# - 1800#
LUX: different composition is to be applied to different stones
Application:
The principle of selecting abrasives for continuous abrasion and polishing machine is to make machines operate at top speed and ensure the best processing effect to the stone surface.
The best processing effect includes invisible scratches and burns and the best glossiness on the surface of slabs, which can be achieved by appropriate sequence of abrasive.
To completely eliminate scratches, the scratches produced by the same specification of abrasive have to remove those produced by less refined abrasive used earlier before finer abrasive to be applied with reasonable combination of abrasive, speed of belt, speed of swing and pressure of abrasive heads. Otherwise, the scratches can not be eliminated in the next procedures. To avoid burn, correct pressure of abrasive heads and flow of cooling water have to be chosen. The glossiness depends on the material quality priorly. While an ideal glossiness to each stone can also be achieved by a correct combination of abrasive and technical parameters.
In respect of the application of abrasive of V140 to granite abrasion machine with 20 heads, the following parameters are recommended:
Sequence: The basic sequence can be two groups of 14#, 16#, 24#, 36#, 46#, 60#, 80#, 120#, 240#, 320#, 400#, 600#, 800#, 1000# and 1200# and three groups of polishing abrasive. To deep kerf, one or two more groups of 14# (16#) has to be added. If high glossiness required, one or two more groups of 1000# (1200#) or one group of extra 1500# (1800#) has to be added. Belt speed: 100 - 120 cm/min. To hard stones, slower the speed of belt moderately.Head pressure: 2.5, 3.5 kg/cm2. To hard stones, reduce the head pressure moderately.
To produce the best processing effect, Stone Abrasive is able to design abrasive with various shapes and composition suitable to the various material quality and processing technique required by clients.
Expansive Chemical Co., Ltd., established by Hunan Loudi Stone Abrasive Co., Ltd, is a professional manufacturer of Soundless Cracking Agent. The company has been engaged in developing safe, controllable, silent and highly expansive demolition agent CRACK.AG with the latest non-explosive demolition technology, which can be applied to concrete cutting, concrete demolition, rock breaking, granite and marble quarrying, mining and so on.
As a professional manufacturer, we guarantee to supply products to our customers with high quality, competitive price, satisfactory technical support and service. ECC is capable of providing tailor made products according to the demand of the customers and looking for the most technically suitable and cost-effective solution and service for the customers.
ECC products enjoy high reputation not only in domestic marble and granite quarrying, mining and concrete demolition market, but also in overseas markets like Spain, Australia, India, Middle East and Africa.
Adhering to the principle of quality first and customers superior, ECC is endeavoring to achieve the goal of becoming the most reliable supplier to our customers. ECC cordially welcomes distributors at home and abroad to join us for mutual benefit.
- Non Explosive
- Ideal solution in Granite & Marble Quarry
- High Quality & Better Services
- Unbeatable Price
CRCK.AG is an environmental friendly non-explosive demolition agent which is popular in the international quarrying and demolishing market. When mixed with clean and cold water to be mortar and poured into pre-drilling holes of rock and concrete, it swells and exerts expansive capabilities on the hole-wall at a unit value of more than 50 Mpa (500kg/cm2) which is strong enough to cut and crack concrete, marble and granite after a certain period with no noise, no vibration, no ash, no toxic gas and no flying rocks. It is safe, environmental friendly, non-explosive, no need to train professional personnel, easy to use and controllable.
The universal type, CRACK.AG 2003 with unique compostion, is a lastest technical innovation and development of ECC, which greatly improves the production efficiency, simplifies the operation at the job site, applies to all-weather condition, yields stronger expansive strength and faster reaction with water. It is no need for customers to purchase and store various specifications for different temperatures. After repeated trial tests, the quality properties of CRACK.AG 2003, like performance ratio, consumption ratio, cracking efficiency and so on, prove to be remarkably good and some are even better than those of traditional products from top international suppliers. It is an excellent alternative to the traditional soundless cracking agent.
Advantages
- Cutting blocks of Marble and Granite more economically and cost-effectively than traditional wire-sawing way.
- Easily split and fracture mass rock to isolated small blocks that can be more easily demolished or cutting.
- It can be used to process blocks from Marble and Granite.
- It can achieve maximum production time, output and efficiency in quarrying and mining In safe condition.
- Labors can be more productive and cost-effective.
- It is ideal for mining of emeralds and other precious stones.
- The shape of blocks in quarry can be controllable.
- Its application to concrete demolition does not cause any damage to the environment of cities.
Items
ECC provides two types of SCA (Soundless Cracking Agent): traditional type and universal type.
Four specifications of the traditional type are available on the basis of job-site environment and temperature.
- SCA-1 temperature 20-35oC
- SCA-2 temperature 10-25oC
- SCA-3 temperature 5-15oC
- SCA-4 temperature 5-8oC
Universal type : CRACK.AG 2003 only.
Application Scope
CRACK.AG can be applied in various situations:
- Granite, marble, sandstoneCRACK.AG , limestone, quartzite quarrying and cutting
- Rocks pre-splitting, fracture, cut, demolish and removal
- Concrete structures demolition and rocks removal when explosion not allowed
- Fractuconstrcution re and demolition of the concrete buildings and structures
- Rocks cutting for road
Technical Information
Properties
CRACK.AG appears to be grayish white powder and be composed of multi-structured inorganic particles. There is no content of any harmful composition.
Factors affecting the expansive pressure of CRACK.AG
- The expansive stress of CRACK.AG reach maximum value in about 24 hours of reaction, however, it still increase afterwards.
- The expansive stress of CRACK.AG would decrease if water ratio increases.
- The expansive stress of CRACK.AG would grow up with rising temperature.
- The expansive stress of CRACK.AG would be higher if the diameter of pre-drilled hole is bigger.
Fracture Mechanism
The rock tensile strength is 4-10 MPa and concrete tensile strength 2-4 MPa. Mixed with appropriate water and poured into pre-drilled holes in stone or concrete, CRACK.AG starts hydration reaction. The solid expansion produced after coagulation and rigidification exerts pressure in the hole-walls exceeding 50 MPa ( (500 kg / cm2), which is far more stronger than the tensile strength of the stone and concrete. Therefore the stone or concrete is cut or demolished easily.
The crack time of traditional types take 6-8 hours after the completion of feeding. The crack time of the universal type of CRACK.AG 2003 can be controlled from 30 minutes to 24 hours by the dose of inhibitor added into water. The speed of splitting is determined by the reaction speed which is up to the temperature of the job site. The higher temperature, the shorter the reaction time.
Packing and storage
CRACK.AG is packed in moisture-proof carton box with 4 plastic bags of 5 kg in each. The net weight is 20 kg. The validity period of CRACK.AG is one year if stored in dry place, under constant temperature and without any damage to package.
Safety Precaution
The following warning has to be observed closely when dealing with CRACK.AG
- Safety goggles, dust-proof mask, and rubber gloves and helmet MUST be worn while preparing, mixing and filling CRACK.AG at all times.
- Plug the holes immediately after filling and cover the holes with straw mat. Keep your face away from the holes filled by mortar. Stay away from filled holes at least 3 hours after filling to avoid blow-out shot. Keep people away from job site after filling.
- Prepare clean water and towel at the job site. In case of contact with the products in your eyes and skin, either in dry or wet form, wash them Immediately with large amounts of cold and clean water without rubbing. Consult doctor quickly.
|
