(1) The process characteristics and heat transfer mode of iron mold sand coated casting are analyzed. Aiming at the common […]
Bucket tooth is a vulnerable part on the excavator bucket. When in use, the bucket tooth handle must have sufficient
As one of the important parts of the engine, the force of the crankshaft is complex in work. The constant
By the end of June 2019, the total number of motor vehicles in China had reached 357 million. With the
Ordinary high manganese steel has less work hardening and insufficient wear resistance under low stress wear or small impact load.
1. Cutting mechanism When the bucket tooth acts with the rock (ore) under high impact load, on the one hand,
(1) Composition optimization and material selection of wear-resistant materials high manganese steel can achieve high hardness due to work hardening,
Lost foam casting technology has the advantages of wide application range, accurate size and shape of lost foam casting, smooth
1) For small and medium-sized castings (especially investment precision castings), they have small volume, light weight and less processing capacity.
At present, the production of nodular cast iron crankshaft mainly adopts iron mold sand coating casting. The filling, solidification and
1. Cast in bucket teeth The base metal in the cast-in-place bucket teeth is generally high manganese steel with high
The research on Numerical Simulation of China’s foundry industry began in the late 1970s. However, it has developed rapidly together,
(1) The performance requirements of flywheel casting are analyzed, the casting process scheme is designed, and the process parameters are
The existing excavators are mainly mechanical excavators (also known as electric shovels) and hydraulic excavators. The bucket teeth (shovel teeth)
Role of lost foam casting coating in lost foam casting The function of lost foam casting coating is to support
High manganese steel, also known as Hadfield steel, was invented by Robert Hadfield in 1882. Ordinary high manganese steel is
Excavators are widely used in highway, bridge, construction, breeding pond, underground engineering, emergency excavation and other engineering construction fields. It
Compared with cast iron, the pouring temperature of cast steel is higher, which is more than 1560 ~ 1620 ℃
1.Poor ultrasonic penetration The complex interface of coarse grain and uneven structure enhances the scattering of ultrasonic wave, and the
When the amount of ferrite in the matrix increases, the elongation after fracture increases. The data · s] show that
In 1944, Victor pastes of Columbia University first applied numerical simulation to the casting process, and made heat conduction analysis
(1) The theory of self shrinkage is used to improve the hole filling rate of Flywheel Casting. (2) In the
At present, the manufacturing processes of bucket teeth of excavators in China are sand casting, forging and precision casting. In
Under the same process parameters, three sand casting schemes were numerically simulated (Fig. 1). It can be seen from the
1. Function of sand casting exhaust system (1) The exhaust system of sand mold casting discharges the medium-sized cavity of
Lost foam casting is a kind of casting technology. There will be various casting defects in the casting process, which
How to calculate the price of iron castings: 1.Confirm whether we can produce the casting. We need to check whether
The boom is one of the key parts of the excavator frame (boss). In the early stage, this product was
Hybrid electric vehicles are generally classified according to the form of power transmission, which can be divided into series type,
Although the casting defects produced in the casting process of steel castings are similar to those produced by ingot casting,
