Penglai Jinchuang Investment Valve Industrial Co.

Dengzhou, China

Penglai Jinchuang Investment Valve Industrial Co.

Dengzhou, China
SEARCH FILTERS
Time filter
Source Type

Lu R.,Penglai Jinchuang Investment Valve Industrial Ltd. | Bao Y.,Penglai Jinchuang Investment Valve Industrial Ltd. | Zhang D.,Penglai Jinchuang Investment Valve Industrial Ltd. | Qin L.,Penglai Jinchuang Investment Valve Industrial Ltd.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2012

Origination of slurry-plate inclusion and surface-layer exfoliation in investment casting mold shell was analyzed. Slurry-plate inclusion is closely related to the gap existed in the matching face, and surface-layer exfoliation is attributed to the un-fastened bonding of matching face resulted from the thermal expansion. Two defects can be eliminated by altering wax pattern structure, assembling ways and pouring ways.


Bao Y.,Penglai Jinchuang Investment Valve Industrial Ltd. | Lu R.,Penglai Jinchuang Investment Valve Industrial Ltd. | Zhang D.,Penglai Jinchuang Investment Valve Industrial Ltd.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2012

Partial shell quenching process and its key points were described. Many practical products show that through adopting partial shell quenching process, shrinkage porosity (hole) and un-sound microstructure resulting from hot spot and partial over-thick shell can be eliminated by realizing uniform temperature distribution and sequential solidification, exhibiting chilling effect. Thickness of the flange to wall-thickness of valve body or wall-thickness of flow channel is less than or equal to 3 when the partial shell quenching is applied for flange valve body and valve cover.


Bao Y.,Penglai Jinchuang Investment Valve Industrial Ltd. | Lu R.,Penglai Jinchuang Investment Valve Industrial Ltd. | Zhang D.,Penglai Jinchuang Investment Valve Industrial Ltd. | Qin L.,Penglai Jinchuang Investment Valve Industrial Ltd.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2012

Insulation on the local shell is to make insulated layer outside the shell of the gate, castings, gate and castings, which can increase solidification time of the molten steel on the insulated layer and enlarge feeding channel for hot spot, so improving feeding ability of the gate and subjecting to the riser function. The process exhibits convenient and flexible, low cost, high feasibility. Meanwhile, it can increase the production yield and reduce the molten steel's consumption.


Bao Y.,Penglai Jinchuang Investment Valve Industrial Co. | Zhang D.,Penglai Jinchuang Investment Valve Industrial Co. | Lu R.,Penglai Jinchuang Investment Valve Industrial Co. | Qin L.,Penglai Jinchuang Investment Valve Industrial Co.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2013

Run-out and dispersed shrinkage defects often occur in investment castings with the long hole and narrow groove because of difficulty in coating and stuccoing operation for long hole and narrow groove. Some ways were presented including dipping slurry, inserting the batten in the long hole, keeping temperature in the partial shell, the ceramic core and the self-hardening core, which could eliminate effectively the problems in a certain extent. In addition, the ways mentioned have the advantages of convenient operation.

Loading Penglai Jinchuang Investment Valve Industrial Co. collaborators
Loading Penglai Jinchuang Investment Valve Industrial Co. collaborators