Commonly used work roll materials are alloy forged steel, alloy cast steel and cast iron, etc.
(1) Alloy forged steel. Alloy forged steel for rolls has been specified in China's national standards, and steels for hot rolling and cold rolling are listed in GB/T 13314-1991. The steel for hot rolling rolls has 55Mn2, 55Cr, 60CrMnMo, 60SiMnMo, etc. The steel for cold rolling rolls is 9Cr, 9Cr2, 9CrV, 9Cr2W, 9Cr2Mo, 60CrMoV, 80CrN13W, 8CrMoV, etc.
(2) Alloy cast steel. There are not many types of alloy cast steel used for rolls, and there is no uniform standard. With the development of electro slag remelting technology, the quality of alloy cast steel is gradually increasing, and the future meeting of cast steel rolls will be widely used.
(3) Cast iron. Cast iron can be divided into ordinary cast iron, alloy cast iron and ductile iron. When casting rolls, different casts can be used to obtain cast iron rolls of different hardness. Therefore, there are semi-cold rolls, chill rolls and infinite chill rolls:
-Semi-cold roll. There is no obvious white layer on the surface of the roll, and the surface hardness of the roll is HS≥50.
-Chill rolls. The surface has a distinct white layer, the core is a gray layer, the middle is a layer of hemp, and the surface hardness of the roll is HS≥60.
-Infinite chill roll. The surface is a white mouth layer, but there is no obvious boundary between the white mouth layer and the gray mouth layer, and the roll surface hardness is HS ≥ 65.
Cast iron rolls have high hardness, smooth surface and wear resistance, and the manufacturing process is simple and inexpensive. The disadvantage is that the strength is lower than that of steel rolls. Only the strength of the ductile iron roll is good.
1. All the Dalin Mechanical Spring Starters have passed the test on the unique spring starting test bench, ensuring that all the products are qualified and there are detailed test data for each product (such as torque, energy, peak, speed, input/output ratio, conversion rate, stability ratio, curve, etc.).
2. All the Spring Starters are equipped with micro-lock preventor, which helps to effectively avoid maloperation on the double-start engine. It can extend the life of the engine.
3. We use maintenance-free grease within each Spring Starter, and the surface finish of our products is a baking finish which is fireproof, oilproof, waterproof and anti-corrosion, with salt spray corrosion resistance.
Product Features
1. Product Function of Dalin Spring Starter :
The starter can compress the springs and store high energy within the unit, then release energy rapidly to start the engine.
It only needs hand cranking and releasing.2. Typical Features of Dalin Spring Starter :
a. Adaptability (Adapt to harsh working conditions, including the conditions with spark, chemistry and wet.)
b. Safety (It is a type of Mechanical Starter, which can be directly operated by people.)
c. Simple and Complete Structure (Independent hand-cranking working system, with no electricity, gas or other energy systems.)
1. What is the engine starter?
As we all know, various engine motors have been used to every corner where modern production exists. And there should be a power system for an engine start, such as a battery or other external systems (gasholder, cable, air compressor, manometer, accumulator, etc.).
2. What is Mechanical Spring Starter?
Even the engine motor has been widely used, there are still some common problems for engine motor. These normal systems are easy to be broken after working day and night. They also can't work well in those worse conditions, overheated or too cold are both difficult for an engine to start. So how can we start the engine in those situations? Mechanical spring starter is the ideal choice for you to solve these problems; it is a kind of engine starters. It is easy to install and use, which can transform manual cranking energy into disc spring potential energy and start the diesel engine with the manual cranking energy.
1. What is the advantage of Mechanical Spring Starter?
a. Adaptability (Adapt to harsh working conditions, including the conditions with spark, chemistry and wet.)
b. Safety (It is a type of mechanical starter, which can be directly operated by a human.)
c. Simple and Complete Structure (Independent hand-cranking working system, with no electricity, gas or other energy systems.)
d. Swift (Easy to operate, and it can release the energy rapidly.)
e. Maintenance-free (Resistant high/low temperature, corrosion resistance. There is no maintenance cost.)
f. Reliability (Reasonable design, mature technology, high-quality material, strict control.)
g. Prevention (Prevent misoperations on dual motor engines.)
2. How can I install a Mechanical Spring Starter?
Each product will be equipped with instructions. Before installation, you need to check how many bores in engine flywheel housing; single bore or twin bores. For an engine with one starter bore, the Dalin spring starter stands by to replace the electric starter when needed. For an engine with twin bores, it is necessary to confirm the mounting bore for the spring starter. So please make sure you have talked with our sales before purchasing.
3. How can I get Mechanical Spring Starter?
You can see our contact info here: Dalin Mechanical Spring Starter
Also you can contact:
Sales: Julie He(Ms.), Tel/Whatsapp/Wechat: +86-13637706003, Email: sales1@cqstart.com
Marketing: Harland Wang(Mr.), Email: sundayritian@cqstart.com
Alloy Chilled Cast Iron Roll is one of the most popular iron rolls with a highly competitive market. Now, we introduce the basic knowledge about the alloy chilled cast iron roll
Alloy Chilled Cast Iron Roll
Alloy Chilled Cast Iron Rolls are mainly used in intermediate roll stand and finishing stand of the sheet, wire rod, section steel, pipe. Their body hardness HSD55-85, roll neck tensile strength 150-220Mpa. The iron rolls are made according to standard ISO, GB, ASTM, DIN, JIS. There is no free graphite in the working layer of alloy chill cast iron roll, it is featured as high hardness, good wear-resistance, the micro metallographic microstructure is fine pearlite and carbides.
Application
The finishing mill for section steel, wire rod, strip, thin plate, and bar;
The pre-finishing stands of high-speed wire;
The rolling ring of stretch reducing mill for seamless steel tube.
High-Cr Composite Spin-Cast Iron Roll
The high-chromium composite cast iron roll is made of wear-resistant high-chromium white cast iron as the outer layer material of the roll body. The ductile iron is generally used as the material of roll core and the roll neck. The high alloy composite cast iron roll produced by the centrifugal
Due to the presence of lath-shaped M7c3, eutectic carbide, chrysanthemum M2c eutectic carbide and granular M23C6 secondary carbide in the matrix, the high chromium composite cast iron roll has excellent wear resistance and high Resilience and impact resistance, thus it is widely used as the rough rolling and finishing rolling work rolls in the hot strip rolling mill, the wide and medium plate rolling mill. as well as the finishing rolling work rolls in the small section steel and sheet rolling mill.
Alloy Indefinite Chilled Cast Iron Roll
The Alloy Indefinite Chilled Cast Iron Roll is a kind of centrifugal composite spin-cast iron roll, it has a double chemical, the outside has high tensile strength and the inside is a lower one, the hardness drop is lower. It is usually used as work roll for the finishing mill to roll the angles, bars, flats and so on.
The indefinite chilled cast iron roll is a roll between chilled cast iron and grey cast iron with a carbon content of 2.5-3.5% and a silicon content of 0.7-1.6%. The structure of the roller body changes uniformly in the outward direction, and the chilled structure gradually transitions to the gray mouth structure, and the chill layer does not change significantly.
Application
work roll of bar & wire rod mill, hot strip mill, cold strip mill, PC mill, section mill, plate rolling mill, non-ferrous mill, etc.
High NiCr Indefinite Chilled Composite Spin-Cast Roll
High NiCr indefinite chilled composite spin-cast roll is a high nickel-chromium infinite chilled cast iron roll, which is produced by full flushing (overflow method) or centrifugal composite casting process. Its material contains high chromium, nickel and molybdenum alloy elements.
High NiCr indefinite chilled composite spin-cast roll has a double chemical, the outside has high tensile strength and the inside is a lower one, the hardness drop is lower, so it has high wear resistance. It is usually used for the finishing mill to roll the final material, to roll the angles, bars, flats and so on.
For more detailed information, just Contact TINVO Mill Roll
Before each order we signed with our client, our client always asks a question: why should I choose Dalin Mechanical Spring Starter?
Actually, we are not only focusing on products but also pay attention to our services. As a supplier, we can provide you our standard spring starters with type code. Besides, we can provide you non-standard product according to your needs. Such as different sizes, different sizes of gears, different colors and different quantity of the disc springs. If you are looking for an ODM supplier, we can also accept your company logo on our spring starters. During the whole production, we have strict rules for quality control. All the Dalin Mechanical Spring Starters have passed the test on the unique spring starting test bench, ensuring that all the products are qualified and there are detailed test data for each product (such as torque, energy, peak, speed, input/output ratio, conversion rate, stability ratio, curve, etc.).
As you can see, we are a qualified supplier in both services and product quality, we have manufactured spring starter for more than 10 years. We have so many clients widely in different countries, you can trust our products. For any trouble, our team will help you at any time.
There are some clients also asked: Why your price is so high?
Compared to the price of the electric starter, spring starter’s price is much higher. But unlike electric starter, spring starter is maintenance-free, waterproof, fire-proof, explosion-proof, requiring no external power system, and producing no sparks.
And for those who thought that our price is too low, it is concerned about labor cost.
As a Chinese supplier, we trust Made in China. For Made in China, the labor cost is always lower than the world average. But please rest assured that we will never lower the quality. Before you make decisions, we can provide you some samples for your reference.
Awaiting your contacts.