What Is Low Carbon Steel parts?
Low-carbon steel parts is carbon steel with a carbon content of less than 0.25%. Because of its low strength, low hardness and softness, it is also called mild steel. It includes most ordinary carbon structural steels and some high-quality carbon structural steels, most of which are used for engineering structural parts without heat treatment, and some are carburized and other heat treated to obtain wear-resistant low carbon steel parts after precision cnc machining services.
The annealed structure of low carbon steel is ferrite and a small amount of pearlite, its strength and hardness are lower, and its plasticity and toughness are better. Therefore, the cold sheet metal stretch formability is good, and the sheet metal forming process can be performed by methods such as crimping, bending, and stamping.
Carbon steel parts also have good weldability. Low carbon steel generally refers to steel with a carbon content between 0.10 and 0.25%. This type of steel has low hardness and good plasticity, and is convenient for cold plastic deformation forming processes, welding and cutting. It is often used for custom manufacturing of chains, rivets, bolts, Shafts, calipers, wear-resistant low-carbon steel parts of machinery and equipment, etc.
Low carbon steel with very low carbon content has low hardness and poor CNC machining machinability. Heat treatment can improve its CNC machining performance and help improve the quality of low carbon steel parts.
Low Carbon Steel parts - Features
Low-carbon steel has a greater tendency to aging, both quenching aging tendency and deformation aging tendency. When the steel material cools quickly from high temperature in the process of metal heat treatment, the carbon and nitrogen in the ferrite are in a supersaturated state. It can also slowly form iron carbon and nitrogen at room temperature, so the strength and hardness of the steel are improved, and Plasticity and toughness decrease, this phenomenon is called quenching aging. Low carbon steel will produce aging even if it is not quenched and air-cooled.
Low-carbon steel parts produce a large number of dislocations through deformation, and the carbon and nitrogen atoms in the ferrite interact elastically with the dislocations, and the carbon and nitrogen atoms gather around the dislocation line. This combination of carbon and nitrogen atoms and dislocation lines is called Korotkoff gas mass. It will increase the strength and hardness of steel and decrease the plasticity and toughness. This phenomenon is called deformation aging.
Deformation aging is more harmful to the plasticity and toughness of low-carbon steel than quenching aging. There are two obvious upper and lower yield points on the tensile curve of low-carbon steel parts. From the appearance of the upper yield point until the end of the yield extension, a surface wrinkle zone formed by uneven deformation appears on the surface of the specimen, which is called the Ludes zone. Many low carbon steel stamping parts are often scrapped because of this.
There are two ways to prevent it.
A high pre-deformation method.
Pre-deformed steel will also produce Lüders belt when stamping after being placed for a period of time. Therefore, the pre-deformed steel should not be placed for too long before stamping.
To add aluminum or titanium to steel.
It forms a stable compound with nitrogen to prevent deformation and aging caused by the formation of Korotkoff gas mass.
Low Carbon Steel parts - application
Low-carbon steel is generally rolled into angle steel, channel steel, I-beam, steel pipe, steel strip or steel plate, which is used to customize low-carbon steel parts such as various construction components, containers, boxes, furnace bodies, construction machinery parts and agricultural machinery.
High-quality low-carbon steel is rolled into thin plates to make deep drawing stamping parts such as automobile cabs and engine hoods; it is also rolled into bars to make low-carbon steel CNC machined parts with low strength requirements.
Low-carbon steel is generally not heat-treated before use. Carburized or cyanidized with a carbon content of more than 0.15% is used for customized low-carbon steel such as shafts, bushings, sprockets, etc. that require high surface temperature and good wear resistance Components.
Low-carbon steel parts are restricted due to their low strength during the CNC machining or stamping process. Appropriately increasing the manganese content in carbon steel, and adding trace amounts of alloying elements such as vanadium, titanium, niobium, etc.
Can greatly increase the strength of the steel. If the carbon content in the steel is reduced and a small amount of aluminum, a small amount of boron and carbide forming elements are added, an ultra-low carbon bainite group can be obtained that has high strength and maintains better plasticity and toughness.
Originally, due to the inherent characteristics of low-carbon steel, its use range was greatly limited.
With the application of some new CNC machining technologies in the steel industry, the CNC machining of low-carbon steel parts has been developed and utilized for many emerging uses. Some large steel mills or steel trading companies are actively cooperating closely with large sling companies.
Developed a series of high-tech, high-precision and high-quality low-carbon steel rigging products, which played a very good technical role in the global rigging industry. This also allows us to better upgrade the processing technology of customized low-carbon steel parts, and comprehensively utilize the material advantages of low-carbon steel to expand the processing direction of better customized low-carbon steel parts.
Low Carbon Steel parts - performance
Low carbon steel is a tough material and is widely used in metal stamping and drawing services. The stress-strain curve of mild steel parts during stamping and stretching is divided into four stages: elastic stage, yield stage, strengthening stage, and local deformation stage.
In the local deformation stage, there are obvious yielding and necking phenomena.
Low Carbon Steel parts Manufacturer leader
Mulan MFG focuses on the manufacture of customized low-carbon steel parts, passed ISO9001-2015 certification, and provides one-stop low-carbon steel parts manufacturing solutions according to product requirements and specifications.
Focusing on the processing of aluminum alloy valve blocks, stainless steel valve blocks, etc., CNC precision Processing of mechanical parts, design and processing of fixtures, fixtures, non-standard equipment, automation equipment, etc.
The company owns, centerless grinding, internal and external cylindrical grinding, CNC machining centers and CNC lathes, as well as ordinary lathes, milling machines, grinders, and lines There are many processing equipments such as cutting, we can meet the processing needs of small batches and multiple varieties.
We can process according to customers’ drawings and samples, from the purchase of metal raw materials to the CNC turning services, precision CNC machining and cnc milling services, Heat treatment and subsequent surface treatment (blackening, zinc plating, chrome plating, nickel plating, anodizing of aluminum materials, black oxidation, etc.) can be completed.
We adopt CAD/CAM system, have independent custom metal & plastic parts design capabilities, and accept data formats converted by UG, PRO/E, SOLIDWORKS, CATIA, etc.