Through the simulation analysis of mold filling and solidification process of different pouring schemes, the similarities and differences of mold […]
Figure 1 shows the filling process of the stepped gating system used in the sand casting of the tractor box.
Among the sub units of the pouring system of tractor box castings, the unit with the minimum cross-sectional area is
The structural diagram of each direction of the tractor reducer box is shown in Figure 1. The mass of the
For the stepped pouring scheme, the pouring temperature of 1400 “C and the pouring speed of 6.8kg/s are the most
The top pouring system of sand mold casting for tractor box adopts rain pouring, which is divided into four oval
The weight of tractor box castings is 205KG, and the estimated gating system mass is 20kg. According to the manual,
The gating system of tractor box castings generally includes sprue cup, sprue, runner and inner sprue. Whether the gating system
The selected tractor reducer case is a large-scale casting designed by a company, which is produced in large quantities. It
(1) The simulation flow of numerical simulation software is introduced, and the setting of simulation parameters of reducer box body
As shown in Figure 1, it shows the filling flow state and temperature distribution at different times when the intermediate
In the casting forming of tractor box, if the parameters are set improperly, such as the mold cavity is too
The design of casting process of tractor reducer case is studied. The main research contents include the following parts: (1)
Tractor transmission system is the core component of tractor, which determines the performance of the whole machine, reflects the manufacturing
At present, the manufacturing development of domestic tractor products and parts has the following characteristics and trends: 1) The average
The structure of gearbox shell is shown in Figure 1. Its material is QT500-7, the blank weight is 458 kg,
1. Casting process In order to ensure the smooth filling of molten iron and prevent the occurrence of defects such
1. Water glass sand mold pouring test Figure 1 shows the water glass sand mold pouring test of the brake
Compared with the traditional wood mold turning process, the mold size and size are limited by the table size and
The sand mold sand core of tractor complex castings adopts the methods of increasing material manufacturing and reducing material manufacturing
The structure of tractor castings is complex. For example, the transmission case shell part of chassis is a thin-walled shell
After the sand core of sand mold is processed and formed, mold closing and pouring shall be carried out. The
The internal and external lifting arms, the transmission rod of the separation manipulator and the brake housing of the tractor
The new product development of tractor complex castings by Moldless sand casting has the following advantages. (1) It has the
The cylinder block, cylinder head and chassis box of tractor are complex castings, which have the characteristics of large mold
With the development of computer hardware and simulation software and the maturity of various finite element software, the application of
Taking the tractor split axle housing as the research object, the paper firstly analyzes the process of the overall structure
As the key part of tractor, the main research contents are as follows: firstly, analyze the process of axle housing
A certain type of broken axle housing of a company is mainly used for tractor load-bearing bridge, with an annual
1 Reagent Anhydrous sodium carbonate solid (analytical pure), sodium peroxide solid (analytical pure), nitric acid (analytical pure), sulfuric acid (analytical
