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  • Member Type: Regular Member
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  • Last Update: April 28, 2020
  • Last Login: April 28, 2020
  • Joined: April 26, 2019
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  • gong da
    gong da
    April 28, 2020 ·
    High manganese steel and high chrome white iron are commonly used materials for wear-resistant castings in foundry. They are alloy steel. Because adding a certain amount of this element to the castings will increase the wear-resistant strength of the...  moreHigh manganese steel and high chrome white iron are commonly used materials for wear-resistant castings in foundry. They are alloy steel. Because adding a certain amount of this element to the castings will increase the wear-resistant strength of the castings, what is the difference between high manganese steel and high chromium cast iron castings? Gongda will give you a brief introduction:

    High manganese steel refers to alloy steel with manganese content above 10%, which contains 10% ~ 15% manganese and high carbon content, generally 0.90% ~ 1.50%, most of which is above 1.0%. It is commonly used to make shovel teeth of excavators, rolling and crushing walls of cone crushers, jaw crusher fork plates, ball mill lining plates, railway frog, plate hammers, hammers, etc.

    If you want to know more casting information, please contact us: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da created a new group:
    April 21, 2020
    What is high chromium cast iron millstone tile
    Grinding Table Segment is a key component of cement vertical mill and slag vertical mill.
    • #Grinding_Table_Segment
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  • gong da
    gong da created a new group:
    April 21, 2020
    Milling High Chromium Cast Iron Grinding Disc
    Milling High Chromium Cast Iron Grinding Disc
    Grinding Table Segment is a key component of cement vertical mill and slag vertical mill.
    • #Grinding_Table_Segment
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  • gong da
    gong da created a new group:
    April 14, 2020
    Stainless steel has the characteristics of heat resistant steel
    Stainless steel has the characteristics of heat resistant steel
    Today we will discuss some difficult problems in the production of heat resistant steel castings.
    • #heat_resistant_steel_castings

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  • gong da
    gong da
    April 14, 2020 ·
    Today we will discuss some difficult problems in the production of heat resistant steel castings.

    China has been producing heat resistant steel since 1952. Later, some new low-alloy hot-strength steels were developed, thus increasing the working...  more
    Today we will discuss some difficult problems in the production of heat resistant steel castings.

    China has been producing heat resistant steel since 1952. Later, some new low-alloy hot-strength steels were developed, thus increasing the working temperature of pearlite hot-strength steels to 600 ~ 620℃, and some new low-chromium nickel oxidation resistant steels were also developed.

    To more details about, please click here: https://www.wearresistantcasting.com/product/cast-steel-series/  less
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  • gong da
    gong da
    April 7, 2020 ·
    So how to choose a reliable manufacturer among countless manufacturers? Today, I'd like to introduce you here. I can also provide some help to customers who want to buy products, so as to ensure that customers can buy cast iron plate products with good...  moreSo how to choose a reliable manufacturer among countless manufacturers? Today, I'd like to introduce you here. I can also provide some help to customers who want to buy products, so as to ensure that customers can buy cast iron plate products with good quality and favorable price.

    First, look at the internal operation process of the company.

    Can simply understand, after the seller manufacturer orders, will go through those processes, the average good manufacturer will have a precise process, this process is unchangeable, more reasonable process planning can explain the depth of the manufacturer's qualifications, how much experience.

    Second, look at standardization.

    1. Check whether the products made by the other company meet the national standard range? Is it national standard or enterprise standard?

    2, check the other company covers an area, size, production equipment and production technology is leading the level of other casting industry companies.

    3. Whether you know the detailed requirements of the customized products and the general idea of quickly clarifying the customer's psychology is an important part of the success factors.

    4. Check whether everyone in the other company knows their job responsibilities. Only by strictly planning their work can they give satisfactory products.

    Third, look at culture.

    The superficial manifestation of cultural elements that one hears and sees when entering an enterprise.

    First of all, the corporate culture requires senior managers to stick to the production line, directly observe the daily production progress and production details, and listen to the actual reflection of employees.

    Secondly, in this culture, lean tools are used every day to highlight potential problems, and everyone will ask "why" until the root cause of the problem is found out, corresponding countermeasures are put forward, and the correctness of the countermeasures is constantly checked.

    Shenyang Gong Da Heavy Equipment Manufacturing Co., Ltd. is a good manufacturer and supplier of wear resistant castings. If you are interested, you can click here: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da
    March 24, 2020 ·
    Heat Resistant Steel Castings refer to steels that work at high temperatures. The development of heat-resistant steel castings is closely related to the technological progress of various industrial departments such as power stations, boilers, gas...  moreHeat Resistant Steel Castings refer to steels that work at high temperatures. The development of heat-resistant steel castings is closely related to the technological progress of various industrial departments such as power stations, boilers, gas turbines, internal combustion engines, aviation engines, etc. Due to the different temperatures, stresses and environments used by various machines and devices, the types of steel used are also different.

    Let's talk about the influencing factors of heat-resistant steel castings:

    1. Influence of chemical composition on service life of heat resistant steel.

    2. Effect of laser shock on service life of heat resistant steel.

    3. Influence of advanced technologies such as modification and solution treatment on service life of heat resistant steel.

    If you want to know more information about heavy castings, please call us: https://www.wearresistantcasting.com/product/cast-steel-series/  less
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  • gong da
    gong da
    March 17, 2020 ·
    In the mechanical equipment industry, cast iron and cast steel account for a relatively large proportion. Therefore, it is very important to choose the wear resistant castings supplier, and the production will be smooth if you choose the right supplier....  moreIn the mechanical equipment industry, cast iron and cast steel account for a relatively large proportion. Therefore, it is very important to choose the wear resistant castings supplier, and the production will be smooth if you choose the right supplier. The wrong choice will not only restrict the production progress of the equipment, but also directly affect the overall quality and cost of the equipment.

    Generally speaking, we should fully understand the requirements of our own products, choose different suppliers according to different castings, and the ultimate goal is to obtain castings of low cost that meet the quality and delivery time. Different castings need different technologies. Even if the same castings need different quantities, they will also need different technologies. One size fits all is not acceptable.

    If you want to know more about it, please contact us: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da
    March 10, 2020 ·
    In recent years, with the growth of population and the progress of society, the discharged waste and pollutants exceed the standard seriously, exceeding the capacity of the earth itself to consume itself. Sustainable development has become an urgent...  moreIn recent years, with the growth of population and the progress of society, the discharged waste and pollutants exceed the standard seriously, exceeding the capacity of the earth itself to consume itself. Sustainable development has become an urgent need.

    Especially for foundry, foundry in our country is a traditional basic industry, at the same time, it is also a high investment, high consumption and high pollution industry. The trend of "three highs" in foundry industry has prompted the industry to seek a new development mode-green management.

    We have rich experience in the production of steel castings, steel ingots and other products. The steel castings provided by Shenyang Gongda have been recognized by many customers. Many customers are very interested in how to improve the density of steel castings. We will briefly summarize the knowledge of steel casting density for you.

    1. If the density of steel castings is high, there will be no casting defects such as bubble cracks, thus reducing the rejection rate of products.

    2. High density steel castings are suitable for use as precision steel castings, and the steel structure of steel castings will be more accurate.

    3. The density of steel castings has a great influence on toughness. The higher the density of steel castings, the higher the toughness.

    Industrial university is a professional wear resistant castings manufacturer. for details, please consult: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da
    March 3, 2020 ·
    In many production and processing places, attention will be paid to the application of steel castings. In fact, there is not much difference between cast steel and cast iron in appearance, but there are great differences in application. First, cast iron...  moreIn many production and processing places, attention will be paid to the application of steel castings. In fact, there is not much difference between cast steel and cast iron in appearance, but there are great differences in application. First, cast iron has certain hardness, but it cannot be compared with cast steel. In addition, cast steel has more advantages in corrosion prevention. Cast iron is easy to rust after a period of use, but cast steel can be used continuously.

    Through the above comparison, it can be found that steel castings occupy more advantages in application. Of course, both cast steel materials and cast iron materials can meet certain application requirements. Users only need to meet the installation and use standards when selecting. In addition, it is necessary to have a certain understanding of the application disadvantages of cast steel materials. Although cast steel materials are relatively good in strength and resistance to external forces, they cannot be used for a long time. If the installation and use time is too long, the materials are likely to have fracture problems. In addition, inaccurate positioning and other phenomena are easy to occur during processing and production. Therefore, attention should be paid to methods and methods during processing and the production process should be completed according to standard procedures.

    In order to improve the production quality of steel castings, workers need to pay attention to the fluidity of molten steel during production and processing. Because the fluidity of molten steel is insufficient, cold insulation may occur during processing and the processing effect of cast steel materials will be affected. If the above situation is to be avoided, attention should be paid to simplifying the operation method during processing and adjusting the cross-sectional area of cast steel materials. Through these methods, the production effect of cast steel materials can be improved.

    To learn more about casting, please contact us:https://www.wearresistantcasting.com/product/cast-steel-series/  less
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  • gong da
    gong da
    February 18, 2020 ·
    As an anti-wear material, high chrome white iron castings have not only necessary strength and toughness, but also their hardness is the most important quality index. Some high chromium iron castings can obtain the required hardness in the as-cast state,...  moreAs an anti-wear material, high chrome white iron castings have not only necessary strength and toughness, but also their hardness is the most important quality index. Some high chromium iron castings can obtain the required hardness in the as-cast state, but most of them need heat treatment to meet the hardness requirements.

    Heat treatment is almost a necessary process for every high chromium iron casting. Reasonable quenching can make the casting obtain the best ability to resist abrasive wear. Annealing can change the machinability of castings and enable them to be machined. There are also some heat treatment process measures that can improve the strength and toughness of castings and various service properties. It should be said that heat treatment is an important means to give full play to the performance potential of high chromium cast iron.

    There are some differences between high chromium cast iron and alloy steel in quenching process specifications, which are mainly shown in the following aspects:

    1. There are a large number of eutectic carbides in the structure of high chromium cast iron, which are different from matrix metal in thermal expansion and contraction and heat conduction. Rapid temperature changes in the heat treatment process will cause high thermal stress around carbides, which is easy to generate thermal cracks near carbides.

    2. A large amount of carbon, chromium and other alloy elements are dissolved in austenite of high chromium cast iron, and a large amount of austenite is retained in the matrix structure after quenching. These residues not only affect the quenching hardness, but also cause the casting to crack or deform after quenching or during use.

    3. When quenching high chromium cast iron parts, they must undergo destabilising treatment. The heating and mixing process of destabilising treatment depends on the carbon content of the material and the chromium-carbon ratio.

    For details, please consult: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da created a new group:
    February 11, 2020
    Gongda is a professional manufacturer of wear-resistant lining plates
    Gongda is a professional manufacturer of wear-resistant lining plates
    If you want to know the wear-resistant lining plate, you must start from the most basic.
    • #wear
    • gong da reacted on this.

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  • gong da
    gong da
    February 11, 2020 ·
    If you want to know the wear-resistant lining plate, you must start from the most basic. Today, Gongda will share with you the reason why wear-resistant lining boards are so popular. If you want to know about this, please follow me to have a look.

    1....  more
    If you want to know the wear-resistant lining plate, you must start from the most basic. Today, Gongda will share with you the reason why wear-resistant lining boards are so popular. If you want to know about this, please follow me to have a look.

    1. The wear-resistant lining board has very high safety during installation and operation. The performance of the wear-resistant lining board we produce is higher than the industry standard, and the technical indexes meet the safety standards and can be installed on site. This is one of the reasons why customers trust this wear-resistant lining board manufacturer and the main reason why the wear-resistant lining board products can be quickly approved by customers when they are sold.

    2. Wear-resistant lining board can be affirmed by users. Apart from the above reasons, there is also a very important factor that its environmental protection performance is very strong. Many wear-resistant lining board products are generally not environmentally friendly during production, causing pollution to the environment, but as a professional wear-resistant lining board manufacturer, the environmental pollution problem is basically solved during production.

    I believe everyone can understand the reason why wear-resistant lining boards are so popular through the above contents. Contact us to learn more: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da
    December 24, 2019 ·
    Iron castings are obtained through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thus obtaining higher strength than carbon steel.

    The comprehensive...  more
    Iron castings are obtained through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thus obtaining higher strength than carbon steel.

    The comprehensive properties of iron castings are close to that of steel and have been successfully used to cast some parts with complex stress and high requirements on strength, toughness and wear resistance. Today we will talk about the classification of iron castings.

    White cast iron: carbon mostly exists in ferrite state, with bright white fracture, hard and brittle ferrite, and less application of mechanism. Carbon exists as graphite.

    Gray cast iron: graphite flake exists

    Malleable cast iron: flocculent

    Ductile Iron: Spherical

    Vermicular cast iron: vermicular

    Under the same matrix structure, ductile iron has higher mechanical properties (strength, plasticity and toughness), malleable iron takes second place, vermicular iron takes second place and gray iron is poorer. However, gray cast iron is widely used in industry due to its low cost, excellent castability, machinability, wear resistance and shock absorption.

    This concludes the classification of iron castings. For more casting information, please contact us: https://www.wearresistantcasting.com/  less
    Copper,Steel Alloy Castings,Wear Resistant Castings - Gongda
    Professional Copper,Steel Alloy Castings, Abrasion,Wear Resistant Castings Manufacturers, China Suppliers - Wearresistantcasting Gongda. High quality copper alloy castings, Alloy steel castings, Wear resistant castings, Abrasion resistant castings products
    wearresistantcasting.com
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  • gong da
    gong da
    December 17, 2019 ·
    Steel products are popular in today's social development. Therefore, steel castings is a typical existence. How to solve the technological problems of steel casting in the production and construction of steel casting? Xiao Bian made the following summary...  moreSteel products are popular in today's social development. Therefore, steel castings is a typical existence. How to solve the technological problems of steel casting in the production and construction of steel casting? Xiao Bian made the following summary for you.

    In order to avoid the above problems in the process of manufacturing large steel castings, attention should be paid to the fact that if the thickness of the material is relatively large, the solidification time should not be prolonged at this time, and the solidification should be completed in a short time. The advantage of this is that the uniform temperature can be maintained in different areas of the steel castings, and the local temperature is not too high and the local temperature is too low. In addition, attention should be paid to the selection of coatings, and coatings conforming to the process regulations must be selected for processing.

    Before putting into production, the staff should also pay attention to the process design method of large steel castings, and strictly follow the process flow during processing to ensure the production effect of large cast steel materials, and also to avoid problems such as process defects. If the thickness of the materials is relatively thin, attention should be paid to dispersion during pouring, which can make pouring more uniform.

    The company will continue to increase and innovate the production process of steel castings to provide support and help to ensure product quality. To understand other aspects of steel castings, you are welcome to call the company for advice: https://www.wearresistantcasting.com/  less
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  • gong da
    gong da
    December 10, 2019 ·
    Generally, alloy steel castings https://www.wearresistantcasting.com/ have very hard material properties and are not easy to fracture. However, some users feel that they can no longer use the castings after they encounter fracture and can only discard...  moreGenerally, alloy steel castings https://www.wearresistantcasting.com/ have very hard material properties and are not easy to fracture. However, some users feel that they can no longer use the castings after they encounter fracture and can only discard them. But in fact, in the face of this kind of situation, you can use professional repair agent glue to re-bond. Good examples include:

    1. Surface treatment with professional repair agent: remove loose substances on the surface of alloy steel castings, polish with sand blasting, electric grinding wheel, wire brush or coarse sand paper to improve the roughness of the repaired surface, and wipe with acetone cleaning agent to clean the bonded surface.

    2. Glue coating for professional repair agent: The repair agent is composed of A and B components. When in use, the main agent A and curing agent B are fully mixed according to the specified mixture ratio until the colors are uniform and consistent. The repair agent is used up within the specified usable time. The remaining glue cannot be reused.

    3. Professional Repairing Agent Apply the mixed repairing agent on the surface of the treated substrate, apply uniform force and press repeatedly to ensure that the material is in full contact with the substrate surface of alloy steel casting to achieve better effect. When multi-layer coating is required, the original coating surface shall be treated before coating.

    4. Professional repair agents can appropriately extend the curing time when the temperature is lower than 25℃. When the temperature is lower than 15℃, appropriate heat sources (infrared ray, electric furnace, etc.) are used for heating. However, the repair parts of alloy steel castings cannot be directly contacted during heating. The correct operation is that the heat source is more than 40cm from the repair surface and kept at 60 ~ 80℃ for 2 ~ 3 hours.

    However, after the alloy steel castings are re-bonded with professional repair agent, it is necessary to make another layer of protection on the casting surface to ensure the internal bonding effect, so that the castings can continue to be used as if there is no fracture.

    To learn more about castings, please click here: https://www.wearresistantcasting.com/  less
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