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Diesel engine four-valve cylinder head gravity casting die and casting method thereof

A four-valve cylinder head and gravity casting technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of poor casting quality, complex shape, difficult demoulding, etc., and achieve good casting quality and easy mold opening , the effect of increasing productivity

Active Publication Date: 2007-07-04
GUANGXI YUCHAI MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 4W four-valve aluminum alloy cylinder head is currently the world's smallest bore diesel four-valve cylinder head. This cylinder head integrates double cam chambers, some cylinder head covers, and ten oil and gas passages. Some wall thickness is only 2.3mm, and some water The cavity is only 2.5mm, with compact structure and complex shape
Due to the difficulty in demoulding the existing four-valve cylinder head water jacket main sand core, the main water jacket main sand core is artificially divided into two sand cores, which must be glued together when assembling the cores, which is labor-intensive and time-consuming, and the quality of the casting is not good

Method used

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  • Diesel engine four-valve cylinder head gravity casting die and casting method thereof
  • Diesel engine four-valve cylinder head gravity casting die and casting method thereof
  • Diesel engine four-valve cylinder head gravity casting die and casting method thereof

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Embodiment Construction

[0024] A specific structure of the gravity casting mold for the diesel engine four-valve cylinder head of the present invention will be further described below in conjunction with the accompanying drawings. The mold includes a front mold 1, a left mold 4, a right mold 5, a rear mold 3, a bottom mold 2, a central heater 6, a tilting sprue cup 8 with adjustable flow rate, casting and slag blocking at the same time, and cylinder head water Set sand core 7. Front mold 1, left mold 4, right mold 5, and rear mold 3 are respectively on the four sides of bottom mold 2. Guide rails for fixing and opening and closing molds. The central heater 6 is placed inside the cavity of the whole set of molds when the mold is heated. The central heater 6 is welded into a piping system by a square tube main pipe and a square branch pipe, and is composed of a burner (as shown in Figure 2). There is an adjustable baffle at the outlet of the sprue cup to adjust the flow. By adjusting the adjustable b...

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Abstract

The invention discloses a diesel engine four air gate head gravity casting mold and its molding method. It uses center heater for warming appearance mold to making the mold warming rapidly and temperature uniform. It uses the head external form mold structure which combines the water cool and air cool to making the whole mold forming the reasonable temperature field of aluminum alloy order consolidation. It uses converter-type adjustable flow, pouring cup of casting and slaging at the same time, ensures the quality of castings, and raises the productivity. It uses the design of four-direction open mode cylinder head integral water sand core mold, the quality of castings in integral water sand core is good, and it is time-saving, labor-saving and easy to opening mold. The mold and methods in the invention can be used for diesel engine four air gate head gravity casting process.

Description

technical field [0001] The invention relates to a gravity casting mold and a casting method for a cylinder head of a multi-cylinder diesel engine, in particular to a gravity casting mold and a casting method for an integral four-valve cylinder head of a multi-cylinder diesel engine. Background technique [0002] The four-valve cylinder head of a diesel engine is an important component of a diesel engine. The 4W four-valve aluminum alloy cylinder head is currently the world's smallest bore diesel four-valve cylinder head. This cylinder head integrates double cam chambers, some cylinder head covers, and ten oil and gas passages. Some wall thickness is only 2.3mm, and some water The cavity is a cavity of only 2.5mm, with compact structure and complex shape. Whether this model can be successfully developed, the casting mold is the key technical content. Due to the difficulty in demoulding the existing four-valve cylinder head water jacket main sand core, the main water jacket ...

Claims

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Application Information

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IPC IPC(8): B22C9/00
Inventor 蒙志祯陈金源谢永泽覃祖斌
Owner GUANGXI YUCHAI MASCH CO LTD
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