CN104014743A

CN104014743A - Improvement technique for casting guide rail casting

Info

Publication number: CN104014743A
Application number: CN201410274867.6A
Authority: CN
Inventors: 马广华; 陈广玉; 张申全
Original assignee: DALIAN JINHE CASTING CO LTD
Current assignee: DALIAN JINHE CASTING CO LTD
Priority date: 2014-06-19
Filing date: 2014-06-19
Publication date: 2014-09-03
Anticipated expiration: 2034-06-19
Also published as: CN104014743B

Abstract

The invention discloses an improvement technique for casting a guide rail casting and belongs to the field of guide rail castings. In the course of formation, one end of a guide rail sand cavity of the guide rail casting is close to a casting opening; the other end of the guide rail sand cavity of the guide rail casting is away from the casting opening and is connected with a ceramic pipe; one end of the ceramic pipe is inserted into the guide rail sand cavity and the other end of the ceramic pipe is inserted into a sand cavity of a casting base; the guide rail sand cavity and the sand cavity of the casting base are communicated through the ceramic pipe; while casting, molten steel enters from one end of the guide rail sand cavity, close to the casting opening, gradually fills the guide rail sand cavity and then enters the sand cavity of the casting base through the ceramic pipe. Aiming at the positions in which impurities, bubbles or contaminations easily occur, the ceramic pipe is used for communicating positions without strict requirements on interior, such as the casting base, thus ensuring that defects do not occur in the key positions of the casting and the design requirement of the casting is met.

Description

The improvement technique of guide rail cast casting

Technical field

The improvement technique that the present invention relates to guide rail cast casting, it belongs to guide rail casting field.

Background technology

Guide rail foundry goods is often used in modern mechanical is produced, especially heavy-duty machinery.Specification requirement and the quality requirement of guide rail foundry goods are higher, and many positions of foundry goods all require to carry out defect detecting test, can not have any casting flaw, guide rail planing surface, journal stirrup, and the interior tissue at the positions such as two ends requires fine and close.In the casting process of casting, most guide rail one end by guide rail foundry goods start cast, and molten steel flow to the guide rail other end gradually, then flow to the elsewhere of guide rail foundry goods.In this process, the guide rail other end is blind end, and the thing that drops in the impurity in molten steel and molding sand is assembled at the other end of guide rail foundry goods gradually.After solidifying, cause impurity, the pore or dirty more of the other end of guide rail, affect the quality of guide rail foundry goods.

Summary of the invention

Defect in view of prior art existence, the invention provides the improvement technique of guide rail casting, adopt the mode of water conservancy diversion, the guide rail other end is become to open end, the thing that drops in impurity in molten steel and molding sand cannot be assembled at the other end of guide rail foundry goods, improve the quality of guide rail foundry goods.

For achieving the above object, the technical solution adopted in the present invention is: the improvement technique of guide rail cast casting, and casting technique comprises moulding, mould assembly, cast, knockout, cleaning, ball blast, antirust.In modeling process, one end, guide rail sand mold chamber of guide rail foundry goods is near sprue gate, other end remote pouring mouth, and one end of remote pouring mouth connects earthenware; Insert in guide rail sand mold chamber one end of earthenware, and the other end inserts in the sand mold chamber of foundry goods base, and earthenware is communicated with the sand mold chamber of guide rail sand mold chamber and foundry goods base; During cast, molten steel enters guide rail sand mold chamber by the one end near sprue gate, is full of gradually guide rail sand mold chamber, continues to enter the sand mold chamber of foundry goods base by earthenware.

Adopt after such scheme, compared with prior art there is following beneficial effect: for easily causing impurity, pore or dirty position in foundry goods, adopt earthenware to be communicated to if foundry goods base etc. is to the undemanding position of internal request, make above-mentioned defect can not occur in foundry goods key position, reach casting design requirement.

Accompanying drawing explanation

Fig. 1 is that the master of guide rail foundry goods formative technology looks schematic diagram;

Fig. 2 is the schematic side view of guide rail foundry goods formative technology.

In figure: 1, guide rail sand mold chamber, 2, foundry goods base, 3, earthenware, 4, sprue gate.

The specific embodiment

For understanding the improvement technique of guide rail cast casting in depth, in conjunction with Fig. 1 and Fig. 2, be described as follows:

The improvement technique of guide rail cast casting, casting technique comprises moulding, mould assembly, cast, knockout, cleaning, ball blast, antirust, in type process, 1 one end, guide rail sand mold chamber of guide rail foundry goods is near sprue gate 4, other end remote pouring mouth 4, and one end of remote pouring mouth 4 connects earthenware 3; Insert in guide rail sand mold chamber 1 one end of earthenware 3, and the other end inserts in the sand mold chamber of foundry goods base 2, and earthenware 3 is communicated with the sand mold chamber of guide rail sand mold chamber 1 and foundry goods base 2; During cast, molten steel enters guide rail sand mold chamber 1 by the one end near sprue gate 4, is full of gradually guide rail sand mold chamber 1, continues to enter the sand mold chamber of foundry goods base 2 by earthenware 3.

According to the rail length of guide rail foundry goods and position, select suitable earthenware, it is 40mm that conventional guide rail foundry goods is selected the diameter of earthenware, earthenware is arc hollow pipe.During moulding, in advance earthenware is put into sandbox, connection guide rail one end and foundry goods base fixed position.Sand mold chamber is according to the cavity of the shape-designing of guide rail foundry goods, fills with molten steel when pouring into a mould in cavity, is the moulding of guide rail foundry goods after cooling and shaping.

For easily causing impurity, pore or dirty position in foundry goods, can adopt such scheme, this position is communicated to if foundry goods base etc. is to the undemanding position of internal request by earthenware, makes above-mentioned defect can not occur in foundry goods key position, reach casting design requirement.

Claims

1. the improvement technique of guide rail cast casting, casting technique comprises moulding, mould assembly, cast, knockout, cleaning, ball blast, antirust, it is characterized in that: in modeling process, one end, guide rail sand mold chamber (1) of guide rail foundry goods is near sprue gate (4), other end remote pouring mouth (4), and one end of remote pouring mouth (4) connects earthenware (3); Insert in guide rail sand mold chamber (1) one end of earthenware (3), and the other end inserts in the sand mold chamber of foundry goods base (2), and earthenware (3) is communicated with the sand mold chamber of guide rail sand mold chamber (1) and foundry goods base (2); During cast, molten steel enters guide rail sand mold chamber (1) by the one end near sprue gate (4), is full of gradually guide rail sand mold chamber (1), continues to enter the sand mold chamber of foundry goods base (2) by earthenware (3).