CN205270819U

CN205270819U - Graphite chill for casting process

Info

Publication number: CN205270819U
Application number: CN201521017894.1U
Authority: CN
Inventors: 马斌悍; 惠国栋; 张勇; 许翔; 张潇
Original assignee: Ningxia Kocel Energy Co Ltd
Current assignee: Ningxia Kocel Energy Co Ltd
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2016-06-01
Anticipated expiration: 2025-12-10

Abstract

The utility model relates to a graphite chill especially relates to a graphite chill for casting process, and it includes working face and nonworking face, its characterized in that: the smooth surface of this working face for there not being the hole defect, nonworking face is last process fluted, the utility model discloses the structure is unique, avoid graphite chill roll -off, off tracking from molding sand, the core sand, can increase substantially production efficiency, the performance of reduction in production cost in order to improve the graphite chill.

Description

A kind of casting technique graphite chilling block

Technical field

The utility model relates to a kind of graphite chilling block, particularly relates to a kind of casting technique graphite chilling block.

Background technology

Foundry goods is in cooled and solidified process, and the defects such as shrinkage porosite easily occurs in the position of final set, and surface hardness is low, seriously affect casting quality. To adopt chill and rising head to carry out feeding with the use of to foundry goods habitually in the past in casting technique, make foundry goods directional freeze, expand the scope of rising head contracting distance; Prevent foundry goods from producing shrinkage cavity and crackle; Make simultaneously solidifying of foundry goods and foundry goods wall, it is to increase setting rate; Improve cast(ing) surface hardness and wear resisting property etc.

Chill can be divided into steel chill, cast iron chill, graphite chilling block etc. by material, graphite chilling block is little with density, heat conductivility height, heat storage capacity is strong, reused advantage is developed rapidly, and more and more casting producers promotes the New Casting Technique that this kind makes Quench material replacement metallic substance with graphite.

The surface that chill contacts with foundry goods is referred to as working face, and molding sand imbedded by chill, the surface at core sand position is referred to as non-working surface. Casting technique requires that working face is smooth, derives to guarantee the even heat of foundry goods.

Current graphite chilling block, taking Graphite Electrodes/graphite side as embryo material, with ripsaw bed blanking, is then processed into the graphite chilling block of required specification with lathe, milling machine etc., to guarantee chill smooth surface.

Graphite chilling block is because of its good lubricity in the process used, and during moulding, relatively cast iron chill etc. is difficult installs, the particularly position of molding sand, core sand weakness, the easy sideslip of graphite chilling block, skids off, and affects surface quality of continuous castings, and even foundry goods is scrapped.

Also do not overcome the method for above-mentioned defect at present.

Summary of the invention

The purpose of this utility model is the defect overcoming prior art, there is provided a kind of structure unique, avoid that graphite chilling block skids off from molding sand, core sand, sideslip, production efficiency can be increased substantially, reduce production cost to improve a kind of casting technique graphite chilling block of the use properties of graphite chilling block.

The utility model realizes in the following way:

A kind of casting technique graphite chilling block, it comprises working face and non-working surface, it is characterised in that: this working face is the shiny surface not having hole defect, and non-working surface is processed with groove;

Described working face do not have hole defect refer to process by serration sawing machine after adopt polishing machine polishing grinding, or the diameter crossing hole by the slow cutter milling of milling machine is less than 0.05mm;

The degree of depth of the groove on described non-working surface is 1 ~ 3mm, the shoulder breadth 1 ~ 3mm of groove, 90 ~ 135 ��, the pitch angle of groove;

The pitch angle of described groove refers to the inclined-plane of groove and the angle of non-working surface;

Described groove is at distance graphite chilling block more than working face 20mm;

Described groove processes by ripsaw bed or crossed by milling machine formed by combination cutter sharp knife milling.

The utility model has following effect:

1) method unique, avoid that graphite chilling block skids off from molding sand, core sand, sideslip: the working face of graphite chilling block is processed into the shiny surface not having hole defect by the utility model, and non-working surface is processed with groove; The working face being processed graphite chilling block is smooth, without hole defect; The non-working surface being processed graphite chilling block has groove. Processed graphite chilling block working face smooth, to ensure the heat of foundry goods by graphite chilling block working face fast, derive uniformly; Moulding, imbed the graphite chilling block in molding sand, core sand when making core, because of the specific groove of its non-working surface, difficult drop-off after installing, the phenomenon stopped graphite chilling block sideslip, skidding off.

2) use properties of graphite chilling block can be improved: the non-working surface of the graphite chilling block that the utility model is processed has groove, the groove degree of depth 1 ~ 3mm, groove shoulder breadth 1 ~ 3mm, 90 ~ 135 ��, groove pitch angle, specification according to graphite chilling block selects the degree of depth of groove, shoulder breadth and pitch angle so that it is can well embed in molding sand, core sand and not come off.

3) production efficiency can be increased substantially, reduce production cost: the working face of the utility model processing graphite chill is smooth, without hole defect; The non-working surface being processed graphite chilling block has groove. The face that general graphite chilling block contacts with foundry goods is less, and for the graphite chilling block of cubic shaped, a general only face contacts with foundry goods; The efficiency of the processing of general ripsaw bed, the processing of milling machine sharp knife adopts the slow cutter processing of polishing machine polishing grinding, milling machine higher than serration sawing machine after processing, so adopting technique described in the utility model, can increase substantially production efficiency, reducing production cost. For 40*40*60mm specification graphite chilling block, adopting technique described in the utility model, efficiency can improve about 1.2 times.

4) graphite chilling block that the utility model is processed moulding, make core time installation easy to use, use, personnel labor intensity and labor capacity can be effectively reduced.

5) the utility model provides graphite chilling block can effectively promote graphite chilling block self quality, makes it to be applicable to better casting field.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the utility model embodiment 1;

Fig. 2 is the schematic diagram of the utility model embodiment 2;

Fig. 3 is a kind of schematic diagram of groove described in the utility model;

Fig. 4 is another kind of schematic diagram of groove described in the utility model.

Embodiment

Embodiment one: according to a kind of graphite chilling block of processes described in the utility model, as shown in Figure 1: it comprises working face 1; Non-working surface 2; Groove 3.

Non-working surface is embedded in molding sand, makes it be easy to be embedded in molding sand according to the groove 3 of processes described in the utility model, not sideslip, skid off and come off.

The described groove degree of depth 1 ~ 3mm, groove shoulder breadth 1 ~ 3mm, 90 ~ 135 ��, groove pitch angle.

Embodiment two: according to another kind of graphite chilling block of processes described in the utility model, as shown in Figure 2: it comprises working face 1; Non-working surface 2; Groove 3.

Non-working surface is embedded in molding sand, core sand, makes it be easy to be embedded in molding sand according to the groove 3 of processes described in the utility model, not sideslip, skid off and come off.

Above-mentioned working face 1, for not having the shiny surface of hole defect, non-working surface 2 is processed with groove 3.

Described working face 1 do not have hole defect refer to process by serration sawing machine after adopt polishing machine polishing grinding, or the diameter crossing hole by the slow cutter milling of milling machine is less than 0.05mm.

As shown in Figures 3 and 4: the pitch angle of described groove 3 refers to the inclined-plane of groove 3 and the angle of non-working surface, described groove 3 is at distance graphite chilling block more than working face 220mm, and described groove 3 processes by ripsaw bed or crossed by milling machine formed by combination cutter sharp knife milling.

Above-described specific embodiment; the purpose of this utility model, technical scheme and useful effect have been further described; it is it should be understood that and be the foregoing is only specific embodiment of the utility model; it is not limited to the utility model; all within spirit of the present utility model and principle; any modification of being done, equivalent replacement, improvement etc., all should be included in protection domain of the present utility model.

Claims

1. a casting technique graphite chilling block, it comprises working face (1) and non-working surface (2), it is characterised in that: this working face (1), for not having the shiny surface of hole defect, non-working surface (2) is processed with groove (3).

2. a kind of casting technique graphite chilling block as claimed in claim 1, it is characterized in that: described working face (1) do not have hole defect refer to process by serration sawing machine after adopt polishing machine polishing grinding, or the diameter crossing hole by the slow cutter milling of milling machine is less than 0.05mm.

3. a kind of casting technique graphite chilling block as claimed in claim 1, it is characterised in that: the degree of depth of the groove (3) on described non-working surface (2) is 1 ~ 3mm, the shoulder breadth 1 ~ 3mm of groove (3), 90 ~ 135 ��, the pitch angle of groove (3).

4. a kind of casting technique graphite chilling block as claimed in claim 3, it is characterised in that: the pitch angle of described groove (3) refers to the inclined-plane of groove (3) and the angle of non-working surface.

5. a kind of casting technique graphite chilling block as claimed in claim 1, it is characterised in that: described groove (3) is at distance graphite chilling block working face (2) more than 20mm.

6. casting technique graphite chilling block as claimed in claim 1 a kind of, it is characterised in that: described groove (3) processes by ripsaw bed or crossed by combination cutter sharp knife milling by milling machine to be formed.