CN86201958U

CN86201958U - Rollers for base ball rolling

Info

Publication number: CN86201958U
Application number: CN 86201958
Authority: CN
Inventors: 范垂柳
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-04-12
Filing date: 1986-04-12
Publication date: 1987-04-08

Abstract

The utility model relates to rollers for baseball rolling, which is used for rolling down a baseball and travels on a skew rolling mill with two rollers. The two rollers are arranged on the right and on the left, wherein, one is a smooth roller, and the other is a roller processed into a screw type pad-box. When a baseball grinding medium rolled by the utility model is used for mineral concentration production, the medium consumption can be reduced, the grinder work rate of a grinder and the concentrate grade can be improved, the tailing grade can be decreased, and the metal recovery rate and the handling ability of the grinder can be improved.

Description

Rollers for base ball rolling

The utility model belongs to the instrument in the special equipment of making the baseball abrasive media in a kind of stress metal manufacture field.

At technics of metallurgy mineral dressing, the abrasive media that grinding machine is used in the industries such as building building cement is many with ball, rod, columned, and the baseball abrasive media occurs the latest.At present, making the processing method that baseball adopted in the stress metal manufacture field is Forging Technology, promptly on the friction press or die forging on the steam hammer.It is more convenient that bar (round steel) is forged baseball, and its method is to adopt empty steam hammer die forging, and square billet or square steel are forged baseball, also can adopt the die forging mode, but because the blank specification is slightly little or big slightly, often causes the misrun phenomenon and overlap occurs.The ordinary circumstance square billet forges and presses baseball on friction press, the saturating sintering briquette material back of coming out of the stove is pressed into ball earlier on last first friction press, follow on second friction press and forge into baseball, two forcing presses start simultaneously, closely cooperate, the baseball that is pressed into adopts the method for immediate quenching self-tempering, baseball of production in 45～60 seconds.

Use the method for Rollers for base ball rolling rolling baseball on the two-roller skew-rolling machine and compare with forging and pressing, have the high characteristics of efficient, produce the baseball of small dimension, per minute is produced 100～180, produces baseball efficient than forging and pressing and can improve more than 100 times.The baseball shape that forging and pressing are produced is specification not, size inaccuracy, misrun or overlap sometimes.And rolling baseball shape is regular, and size is accurate, and smooth surface does not have phenomenons such as misrun overlap.Baseball is produced in forging and pressing, and labor strength is big, and whole process of production is heavy manual labor, and noise is big, and dust is many, and working environment is not good.Rolling baseball is mechanization production, and labor strength is low, and working environment is better.

The utility model Rollers for base ball rolling is the instrument in the special equipment of rolling baseball.Its objective is because baseball is a kind of medium of new shape of the strong point of the abrading-ball of widely collecting the grinder widespread usage, frotton, cylinder, round table-like medium.Its shape body part is a cylinder, and the end is a sphere.This shape determined it be applicable in, fine grinding, also be suitable for corase grind, and the same with abrading-ball simple to operate.The ore grinding maintenance capacity is little, the operating rate height.Baseball integrates the strong point of ball, rod, cylinder, round table-like medium, and can effectively eliminate they separately weakness and a kind of novel optimal abrasive media that produces.Rollers for base ball rolling is mounted in the key tool of manufacturing baseball on the two-roller skew-rolling machine.

The utility model Rollers for base ball rolling carries out on the two-roller skew-rolling machine in order to rolling baseball.

See accompanying drawing 1, Rollers for base ball rolling and allocation plan.Install about two rolls, 1 is smooth roll among Fig. 1; The 2nd, be carved with the roll of screw type groove, its diameter is 6～12 times of product diameter.The smooth roll diameter is bigger by 5% than the external diameter of the roll that is carved with the screw type groove.The roll pass length that is processed into the screw type groove represents that with the number of degrees that spiral ridge twines whenever winding with one circuit is 360 ° usually.

The pass spiral ridge divides two parts, see accompanying drawing 2, in the fin height change curve, 990 ° of parts of locating to the steel billet that begins to nip, 450 ° are moulding end of a period place, to the moulding end of a period, the height of fin changes from low to high from the part of the steel billet that begins to nip, and this sector hole type spiral ridge claims profiled section.The spiral ridge length of first stage building section is got the week half that winds with one circuit, promptly 360 °～540 °.

The spiral ridge of 450 °～0 ° of part in the accompanying drawing 2, its effect is the finishing product, cuts away the connection neck, this section claims Strain During Finishing Stage.The spiral ridge length of general Strain During Finishing Stage is got and is twined 1 1/4 weeks, promptly 450 °.

The basic screw-pitch of pass is the width that the length of a product adds a basic fin.

The height of basic fin is got the product radius and is added 0.5～1.0m/m.See accompanying drawing 3, basic fin height and product radius relationship figure.It is the baseball product that basic fin width gets among 1/2～2/3 Fig. 3 of height of basic fin 1, the 2nd, and the basic fin of roll.

According to the principle that metal under fin enlarged drawing and the fin adapts, calculate the width and the cutting pitch of each position fin of profiled section.Draw out roll figure.

The material of roll is 3Cr ₂W ₈V.

Roll after the processing will carry out surface hardening heat treatment, and its hardness is HRC52-56, to improve the case hardness and the wearability of roll.

Latter two roll that will quench is installed on the milling train, about two rolls to be adjusted to two axial lines respectively in two parallel vertical planes.The axis of two rolls and the angle of level will equal the lead angle of the basic fin of helical groove.

Pass is respectively adorned a guide plate up and down respectively, and the distance between the guide plate working face is than the big 2～5m/m of product diameter.Two guide plate working faces get final product near equating apart from the distance of rolling centerline separately.

The utility model Rollers for base ball rolling rolling baseball abrasive media be used for ore dressing and produce and can make that-200 order content increase by 9% in the grinding machine ore discharge product,-200 order product contents increase by 14% in the classifier overflow, return husky than reducing to 25.3% from 39.8%, per hour, the grinding efficiency of every cubic metre-200 order product growing amount meter improves 12.5%, and dielectric dissipation lacks 9.4%, and the grinding machine operating rate improves 6.6%, make the final concentrate grade improve 0.22%, tailings grade reduces by 1.1%.Metal recovery rate improves 2.98%, and the grinding machine disposal ability improves 6.5%.

Claims

1, the instrument Rollers for base ball rolling in the special equipment of manufacturing baseball abrasive media in a kind of stress metal manufacture field, it is characterized in that one on said roll is a smooth roll, one is the roll that is processed into the screw type groove, is configured in rolling baseball on the two-roller skew-rolling machine about two rolls.

2, Rollers for base ball rolling according to claim 1 is characterized in that the diameter of said smooth roll is bigger by 5% than the external diameter of the roll that is processed into the screw type groove.

3, Rollers for base ball rolling according to claim 1, its diameter of roll that it is characterized in that being processed into the screw type groove is 6～12 times of product diameter.

4, Rollers for base ball rolling according to claim 3, the roll Pass length that it is characterized in that being processed into the screw type groove represents that with the length that spiral ridge twines whenever winding with one circuit is 360 °

5, Rollers for base ball rolling according to claim 3 is characterized in that the said roll that is processed into spiral shell type groove, and pass length spiral ridge divides two parts, and a part is got 360 °～540 ° for profiled section, and another part is that finishing is partly got 450 °.

6, Rollers for base ball rolling according to claim 3 is characterized in that the said roll that is processed into the screw type groove, and the height of basic fin adds 0.5～1.0mm for the product radius.

7, Rollers for base ball rolling according to claim 3 is characterized in that the said roll that is processed into the spiral groove, and the width of basic fin is 1/2～2/3 of a basic fin height.

8, Rollers for base ball rolling according to claim 1, the material that it is characterized in that roll is 3Cr ₂W ₈V.

9, Rollers for base ball rolling according to claim 1 is characterized in that will carrying out the surface hardening processing after the Roller Machining.Its hardness is H _RC=52～56.

10, Rollers for base ball rolling according to claim 1.It is characterized in that two rolls are installed on the two-roller skew-rolling milling train.About two rolls to be adjusted to two axial lines respectively in two parallel vertical planes, the axis of each roll and the angle of level equal the lead angle of the basic fin of helical groove.