CN2645817Y

CN2645817Y - Centrifugal casting drying cylinder die

Info

Publication number: CN2645817Y
Application number: CN 03214378
Authority: CN
Inventors: 贾先义; 王维山; 周志胜
Original assignee: ZHUANGHE CITY ROLLER FACTORY
Current assignee: ZHUANGHE CITY ROLLER FACTORY
Priority date: 2003-08-16
Filing date: 2003-08-16
Publication date: 2004-10-06
Anticipated expiration: 2013-08-16

Abstract

A centrifugal casting drying cylinder die comprises a cold die and end covers at two ends of the cold die, which is characterized in that: the end covers comprise an outer end cover and an inner end cover, the outer diameter of the inner end cover is same as or slightly less than the inner diameter of the casting drying cylinder, and an interval is arranged between the inner and outer end covers which are used for forming an inner lug boss of the drying cylinder. The utility model is characterized in that: the die can form an integral type drying cylinder with the inner lug boss produced by means of centrifugal casting, which not only can meet use requirement, but also has the properties of dense structure and uniformity, etc.; besides, the die overcomes the casting defects of the stationary casting, such as sand air pole, slag and shrinkage porosity, etc., which can enhance product quality greatly.

Description

Centrifugal casting drying cylinder mould

Technical field the utility model relates to a kind of mould, particularly adopts the centre spinning method manufacturing to have the mould of inner convex platform drying cylinder.

The drying cylinder that the two ends of using on the background technology paper making equipment have inner convex platform all is to adopt static pouring procedure production, and the drying cylinder of producing mostly has casting flaws such as sand pore, slag inclusion, shrinkage porosite, and above-mentioned defective is very big to the product quality influence of producing.Though the centrifugal casting technology can overcome above-mentioned defective, is subjected to the restriction of working conditions such as mould, can only produce the straight barrel type drying cylinder at present, and can't the production two ends have the drying cylinder of inner convex platform.

The summary of the invention the purpose of this utility model is to provide a kind of mould that has the inner convex platform drying cylinder with centre spinning method production.

Technology solution of the present utility model is: a kind of centrifugal casting drying cylinder mould, the end cap that comprises cold mould and cold mould two ends, it is characterized in that end cap is made up of outer end cap and inner end cap two parts, the external diameter of inner end cap is identical with the internal diameter of drying cylinder to be cast or be slightly less than the internal diameter of drying cylinder, has between the inside and outside end cap in order to form the spacing of drying cylinder inner convex platform.Be provided with annular core between inside and outside end cap, the boss internal diameter of the external diameter of annular core and drying cylinder to be cast is identical or be slightly less than the boss internal diameter, and annular core is along circumferentially being distributed with radially sprue gate.Inside and outside end cap is by connecting and keep its spacing along circumferential equally distributed connector.Described connector is the connecting axle with positioning function.

Characteristics of the present utility model are: use this mould can realize monoblock type drying cylinder with casting method for centrifugal production band inner convex platform, it can satisfy the needs of use, have again and organize performances such as dense, even, overcome static cast and produced casting flaws such as sand pore, slag inclusion, shrinkage porosite, improved the quality of product.Also can form outside high alloy layer simultaneously, inner then magnesium iron layer with certain toughness by repeatedly intermittently cast with certain degree of hardness and thickness.

Description of drawings Fig. 1 is a structural representation of the present utility model;

The specific embodiment is described further below in conjunction with accompanying drawing:

As shown in Figure 1, the drying cylinder mould is to be made of cold mould 1 and end cap, is cylindrical cavity in the cold mould, and its two ends are stepped and the taper seat that matches with outer end cap is arranged.The end cap that is positioned at the cold mould two ends is made up of outer end cap 2 and inner end cap 3 two parts, and annular inner end cap is made up of outer core 6 and interior support plate 7, and the internal diameter of its external diameter and drying cylinder 5 to be cast is identical or be slightly less than the internal diameter of drying cylinder.The structure of outer end cap is identical with prior art, is the ring cover of band tapering.Be provided with annular core 8 between two end cap, the internal diameter of the external diameter of annular core and drying cylinder boss 4 to be cast is identical or be slightly less than the boss internal diameter, and its thickness is the thickness of waiting to cast boss.The annular core has positioning function and can keep the connecting axle 10 of inside and outside end cap spacing that inside and outside end cap and annular core are fixedly connected into one along circumferentially being distributed with radially sprue gate 9.End cap is covered behind the cold mould port, and an end of its outer end cap leans against on the cold mould step, and the other end is fixing with steady pin 11.When pouring into a mould cylinder body, molten iron is to send into the cold mould middle part by the centre bore of inside and outside end cap, adopts repeatedly the batch (-type) cast, can form outer hard interior tough pouring layer.During the cast boss, go out molten iron cast amount, pour into simultaneously from two ends through outer end cap and core sprue gate according to boss internal diameter, THICKNESS CALCULATION.

Claims

1, a kind of centrifugal casting drying cylinder mould, the end cap that comprises cold mould and cold mould two ends, it is characterized in that end cap is made up of outer end cap and inner end cap two parts, the external diameter of inner end cap is identical with the internal diameter of drying cylinder to be cast or be slightly less than the internal diameter of drying cylinder, has between the inside and outside end cap in order to form the spacing of drying cylinder inner convex platform.

2, centrifugal casting drying cylinder mould according to claim 1, it is characterized in that between inside and outside end cap, being provided with annular core, the external diameter of annular core is identical with the boss internal diameter of drying cylinder to be cast or be slightly less than the boss internal diameter, and annular core is along circumferentially being distributed with radially sprue gate.

3,, it is characterized in that inside and outside end cap is by connecting and keep its spacing along circumferential equally distributed connector according to claim 1,2 described centrifugal casting drying cylinder moulds.

4, centrifugal casting drying cylinder mould according to claim 3 is characterized in that described connector is the connecting axle with positioning function.