The microalloyed non quenched and tempered steel has the advantages of simplifying the production process, improving the material utilization rate, […]
Microalloyed non quenched and tempered steel was developed in the 1970s with the international energy shortage. It is a special
Since the first microalloyed non quenched and tempered steel was successfully developed in West Germany, non quenched and tempered steel
G10mnmov6-3 low alloy cast steel cable clamp is heat treated by quenching + tempering. The heat treatment process is shown
20 ~ 60t medium frequency electric furnace is adopted for smelting, and the tapping temperature is controlled at 1580 ~
Element C in g10mnmov6-3 low alloy cast steel cable clamp shall be controlled within 0.08% ~ 0.10%. Si can strengthen
The casting die is made by lost foam casting, and the foam model is combined with the model. The foam
Cast steel joints are widely used in airport terminals, railway stations, stadiums and other large public buildings because of their
The research work mainly serves the ZHY casting technical transformation project and takes meeting the process production requirements as the
The theoretical basis of casting process CAD system design is the process design method used in the actual production of
In order to reduce the occurrence of defects such as porosity, shrinkage porosity and heterogeneous liquid metal hedge, the general
Aiming at the wet mold clay sand casting process of railway steel castings, the research is carried out from the
Based on the difference of molding process, the production process of coupler steel castings mainly includes wet molding clay sand
The coupler tongue produced by the final process scheme of early steel casting trial production has successfully passed the inspection
The manufacturing industry of large steel castings is the basic industry of national equipment manufacturing, and its development level is
1.Application of steel castings on tanks and armored vehicles Tank armored vehicle is composed of control part, power part, action
Parting surface refers to the surface where the upper and lower molds or two half molds contact. Generally, it is
For less complex steel castings, in order to save man hours and improve the quality of steel castings, the number
The flaw detection in the finishing workshop is mainly to detect the superficial cracks of steel castings after quenching and
In view of various casting defects in the trial production of railway steel castings, combined with the actual production conditions
Ship type military equipment includes destroyers, cruisers, battlecruisers and battleships. Its structure is analyzed and divided into ship platform system
The complete production process of a casting product includes product design, process design, casting blank production, heat treatment and machining.
After molten steel enters the mold, it will produce shrinkage porosity and shrinkage cavity due to liquid shrinkage, solidification shrinkage
According to the position of the cold iron in the sand mold, it can be divided into internal and external.
Before the mass-produced coupler products are finally put into storage, they need to go through one preliminary surface inspection, two
Cold crack refers to the crack caused by the local casting stress greater than the ultimate strength of the alloy
According to the above casting defect analysis and countermeasures, a new process diagram is finally formed, as shown in Figure
(1) The section diagram corresponding to the casting defect I is shown in Figure 1. The casting defect I occurs
1.Mold making and trial production According to the designed process drawing and tooling drawing, the die quotation is carried out.
At the military civilian integration development forum held in July 2015, relevant persons from the Bureau of science, technology and
