阅读说明：本技术 一种镶铸包套钎焊柱钉排的高密度柱钉辊套及其制造方法 (High-density stud roller sleeve of brazed stud row of cast-in sheath and manufacturing method thereof ) 是由 黄齐文 黄闻欣 张新枝 于 2021-08-04 设计创作，主要内容包括：本发明公开一种镶铸包套钎焊柱钉排的高密度柱钉辊套,镶铸包套钎焊柱钉排的高密度柱钉辊套由包套钎焊柱钉排和镶铸固持包套钎焊柱钉排的辊套基体组成,是辊套表层均匀分布、镶铸有直线排列的、长度与辊套一致的或圆周排列的、外径与辊套一致的圆环形包套钎焊柱钉排,且包套钎焊柱钉排之间有不大于包套钎焊柱钉排厚度的间隙间距,所有柱钉在辊套圆柱周面上的所占面积总和与辊套辊面面积之比大于百分之五十,即柱钉密度大于50%。镶铸包套钎焊柱钉排的高密度柱钉辊套的制造方法如下：将包套钎焊柱钉排之间留有不大于包套钎焊柱钉排厚度的间隙间距、均匀分布固定在辊套铸造型腔的辊套外壁的铸型面上,浇注钢水后,钢水进入柱钉排之间的间隙,冷却凝固后,包套钎焊柱钉排被镶嵌铸造、固持在辊套表层。(The invention discloses a high-density stud roller sleeve of an embedded sheath brazing stud row, which consists of sheath brazing stud rows and a roller sleeve substrate for embedding and fixing the sheath brazing stud rows, wherein the roller sleeve surface layer is uniformly distributed and embedded with annular sheath brazing stud rows which are linearly arranged, have the same length as the roller sleeve or circumferentially arranged and the same outer diameter as the roller sleeve, gap intervals with the thickness not more than the thickness of the sheath brazing stud rows are arranged among the sheath brazing stud rows, the ratio of the sum of the occupied areas of all studs on the circumferential surface of the roller sleeve cylinder to the area of the roller sleeve roller surface is more than fifty percent, namely the stud density is more than 50 percent. The manufacturing method of the high-density stud roller sleeve of the embedded sheath brazing stud row comprises the following steps: and uniformly distributing and fixing the sheathed brazing column nail rows on the casting surface of the outer wall of the roller sleeve casting cavity, wherein the gap interval which is not more than the thickness of the sheathed brazing column nail rows is reserved between the sheathed brazing column nail rows, the molten steel enters the gaps between the column nail rows after the molten steel is poured, and after the molten steel is cooled and solidified, the sheathed brazing column nail rows are embedded, cast and fixedly held on the surface layer of the roller sleeve.)

1. The invention discloses a high-density stud roller sleeve of a brazed stud row of an embedded sheath and a manufacturing method thereof, which are characterized by comprising the following steps:

1) the high-density stud roller sleeve for embedding and casting the sheath brazing stud rows consists of sheath brazing stud rows and a roller sleeve substrate for embedding and fixing the sheath brazing stud rows, the roller sleeve surface layers are uniformly distributed, and are embedded and cast with circular sheath brazing stud rows which are linearly arranged, have the same length as the roller sleeve or circumferentially arranged and the same outer diameter as the roller sleeve, gap intervals which are not more than the thickness of the sheath brazing stud rows are arranged among the sheath brazing stud rows, and the ratio of the sum of the occupied areas of all studs on the circumferential surface of the roller sleeve cylinder to the roller surface area of the roller sleeve is more than fifty percent, namely the stud density is more than 50 percent;

2) the manufacturing method of the high-density stud roller sleeve of the embedded sheath brazing stud row comprises the following steps: and gap intervals which are not more than the thickness of the sheathing brazing column nail rows are reserved among the sheathing brazing column nail rows and are uniformly distributed and fixed on a casting surface of the outer wall of the roller sleeve casting cavity, after molten steel is poured, the molten steel enters gaps among the column nail rows, and after cooling and solidification, the sheathing brazing column nail rows are embedded, cast and fixedly held on the surface layer of the roller sleeve.

2. According to claim 1, the high density stud sleeves of rows of brazing studs of the casting-in sheath are arranged such that a number of rows of studs in a linear array of sheath brazing are evenly distributed over the circumferential surface of the sleeve.

3. According to claim 1, the high density stud sleeves of the rows of brazing studs of the casting-in sheath are arranged such that a number of circumferentially arranged rows of circumferential studs of the sheath are evenly distributed over the circumferential surface of the sleeve.

4. According to claim 1, the high density stud sleeve of the row of stud pins of the insert casting sheath is such that the range of the gap spacing between the rows of stud pins of the sheath is not greater than the thickness of the row of stud pins.

Technical Field

The invention discloses a high-density stud roller sleeve of a brazed stud row of an insert casting sleeve and a manufacturing method thereof, relates to the manufacturing of composite material wear-resistant parts, and belongs to the technical field of casting.

Background

The roller sleeve is the most important wear-resistant part in the high-efficiency energy-saving rolling flour mill, the rolling flour mill crushes and crushes materials by performing high stress extrusion on the materials between rollers through the opposite rotation of the pair of roller sleeves, and the roller surface of the roller sleeve bears high alternating pressure stress, abrasive wear of high-hardness materials and cutting wear of sharp corners of high-strength materials with larger sizes, so the wear resistance of the roller surface of the roller sleeve is very important. The existing roller sleeve technology application of the dispersed cast-in steel bond hard alloy stud is that a single stud of the stud is independently cast in the surface layer of the roller sleeve according to a certain arrangement rule, in order to improve the wear resistance of the surface of the roller sleeve, a hard surface wear-resistant layer is built up between the dispersed cast-in studs, but the wear resistance of a hard surface build-up welding layer is far inferior to that of the steel bond hard alloy stud, and after the roller sleeve is used for a period of time and the hard surface build-up welding layer is completely worn, the roller sleeve needs to be built up again to improve the service life of the roller sleeve.

The reason that the wear resistance of the roller sleeve of the dispersed cast-in stud is not enough is that the density of the stud is not high, and the main reason that the density of the existing roller sleeve cast-in stud is not high is the fluidity of molten steel, so the process method of the dispersed cast-in stud cannot manufacture the roller sleeve of the high-density stud.

The high-density stud roller sleeve can realize less or no surfacing maintenance in the service period, and when the stud density is higher than 50%, the roller sleeve does not need surfacing; the invention discloses a high-density stud roller sleeve of a brazed stud row of an insert casting sleeve, which comprises the following steps: the roller sleeve is characterized in that a certain number of straight-line strip-shaped sheathing brazing column nail rows with the length consistent with the length of the roller sleeve are arranged along a roller sleeve bus, are circumferentially and uniformly distributed on the surface layer of the roller sleeve, leave gaps with the thickness not more than that of the sheathing brazing column nail rows and are cast in the surface layer of the roller sleeve; or a certain number of circular sheath brazing column nail rows with the outer diameter consistent with that of the roller sheath are axially and uniformly distributed on the surface layer of the roller sheath, gaps with the thickness not more than that of the sheath brazing column nail rows are reserved between the column nail rows, and the gaps are cast on the surface layer of the roller sheath.

Disclosure of Invention

The invention discloses a high-density stud roller sleeve for embedding sheath brazing stud rows, which consists of sheath brazing stud rows and a roller sleeve substrate for embedding and fixing the sheath brazing stud rows, wherein a certain number of sheath brazing stud rows are embedded and cast on the surface layer of the roller sleeve, and the ratio of the total area of all studs on the cylindrical peripheral surface of the roller sleeve to the roller surface area of the roller sleeve is more than fifty percent, namely the stud density is more than 50 percent.

The shape of the sheath brazing column nail row of the high-density column nail roller sleeve of the cast-in sheath brazing column nail row has two forms: the roller sleeve is provided with a straight-line strip-shaped sheathing brazing column nail row arranged along a roller sleeve bus and a sheathing brazing column nail row arranged in a circular ring shape along the roller sleeve circumference; the roller sleeve is characterized in that a certain number of straight-line strip-shaped sheathing brazing column nail rows with the length consistent with the length of the roller sleeve are arranged along a roller sleeve bus, are circumferentially and uniformly distributed on the surface layer of the roller sleeve, leave gaps with the thickness not more than that of the sheathing brazing column nail rows and are cast in the surface layer of the roller sleeve; the roll sleeve is characterized in that a certain number of circular sheath brazing column nail rows with the outer diameters consistent with those of the roll sleeve are axially and uniformly distributed on the surface layer of the roll sleeve, gaps with the thickness not larger than that of the sheath brazing column nail rows are reserved between the column nail rows, and the gaps are cast on the surface layer of the roll sleeve in an embedding mode.

The manufacturing method of the high-density stud roller sleeve of the embedded sheath brazing stud row comprises the following steps: gaps with the thickness not larger than the thickness of the sheathing brazing column nail rows are reserved among the sheathing brazing column nail rows and are uniformly distributed and fixed on a casting surface of the outer wall of the roller sleeve casting cavity, after molten steel is poured, the molten steel enters the gaps among the sheathing brazing column nail rows, after cooling and solidification, the column nail rows are embedded, cast and fixedly held on the surface layer of the roller sleeve, and the column nail arrangement density on the surface of the roller sleeve is larger than 50%.